upgrade @ampproject/toolbox-optimizer to 2.6.0 (#16043)

See [release notes](https://github.com/ampproject/amp-toolbox/releases/tag/v2.6.0).

**Highlight:** [hero images can now be server-side rendered](https://github.com/ampproject/amp-toolbox/tree/main/packages/optimizer#preloadheroimage) by annotating then with `data-hero`. This will greatly improves LCP when using large images in the first viewport.

```
<amp-img data-hero src="/hero.jpg" layout="responsive" width="640" height="480"></amp-img>
```

Also fixes #15979

packages/next/package.json

@@ -58,7 +58,7 @@
     ]
   },
   "dependencies": {
-    "@ampproject/toolbox-optimizer": "2.5.14",
+    "@ampproject/toolbox-optimizer": "2.6.0",
     "@babel/code-frame": "7.8.3",
     "@babel/core": "7.7.7",
     "@babel/plugin-proposal-class-properties": "7.8.3",

yarn.lock

@@ -2,43 +2,44 @@
 # yarn lockfile v1
 
 
-"@ampproject/toolbox-core@^2.5.4":
-  version "2.5.4"
-  resolved "https://registry.yarnpkg.com/@ampproject/toolbox-core/-/toolbox-core-2.5.4.tgz#8554c5398b6d65d240085a6b0abb94f9a3276dce"
-  integrity sha512-KjHyR0XpQyloTu59IaatU2NCGT5zOhWJtVXQ4Uj/NUaRriN6LlJlzHBxtXmPIb0YHETdD63ITtDvqZizZPYFag==
+"@ampproject/toolbox-core@^2.6.0":
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/@ampproject/toolbox-core/-/toolbox-core-2.6.0.tgz#9824d5f133d82106a9bf0774920843c69fa5c869"
+  integrity sha512-sDMnHj8WaX3tqJS5VsIHkeW98nq5WQ0C9RoFc1PPS3rmYIlS0vhAfHbrjJw6wtuxBTQFxccje+Ew+2OJ2D15kA==
   dependencies:
     cross-fetch "3.0.5"
-    lru-cache "5.1.1"
+    lru-cache "6.0.0"
 
-"@ampproject/toolbox-optimizer@2.5.14":
-  version "2.5.14"
-  resolved "https://registry.yarnpkg.com/@ampproject/toolbox-optimizer/-/toolbox-optimizer-2.5.14.tgz#3235919e730e017ec4e54718e76ca5db8bd003e9"
-  integrity sha512-UTXKVwDKn/xsNOHYroFUtQRxnukdZuiYj7iM1rCAvRmDT9MqrtMTVG8boGjxt5aHLgCnrUZEMz+8d61iBYZeDQ==
+"@ampproject/toolbox-optimizer@2.6.0":
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/@ampproject/toolbox-optimizer/-/toolbox-optimizer-2.6.0.tgz#e1bde0697d0fb25ab888bc0d0422998abaf6bad1"
+  integrity sha512-saToXVopb15a6zKK6kW4B1N/sYZZddkECcqmfTotRxJ2DaLE+wFB6jgWLbaPkgHwvLPQyA2IjV9BHJ/KUFuGzg==
   dependencies:
-    "@ampproject/toolbox-core" "^2.5.4"
-    "@ampproject/toolbox-runtime-version" "^2.5.4"
+    "@ampproject/toolbox-core" "^2.6.0"
+    "@ampproject/toolbox-runtime-version" "^2.6.0"
     "@ampproject/toolbox-script-csp" "^2.5.4"
     "@ampproject/toolbox-validator-rules" "^2.5.4"
     abort-controller "3.0.0"
     cross-fetch "3.0.5"
-    cssnano "4.1.10"
+    cssnano-simple "1.0.5"
     dom-serializer "1.0.1"
     domhandler "3.0.0"
     domutils "2.1.0"
     htmlparser2 "4.1.0"
-    lru-cache "5.1.1"
+    https-proxy-agent "5.0.0"
+    lru-cache "6.0.0"
     node-fetch "2.6.0"
     normalize-html-whitespace "1.0.0"
     postcss "7.0.32"
     postcss-safe-parser "4.0.2"
     terser "4.8.0"
 
-"@ampproject/toolbox-runtime-version@^2.5.4":
-  version "2.5.4"
-  resolved "https://registry.yarnpkg.com/@ampproject/toolbox-runtime-version/-/toolbox-runtime-version-2.5.4.tgz#ed6e77df3832f551337bca3706b5a4e2f36d66f9"
-  integrity sha512-7vi/F91Zb+h1CwR8/on/JxZhp3Hhz6xJOOHxRA025aUFEFHV5c35B4QbTdt2MObWZrysogXFOT8M95dgU/hsKw==
+"@ampproject/toolbox-runtime-version@^2.6.0":
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/@ampproject/toolbox-runtime-version/-/toolbox-runtime-version-2.6.0.tgz#c2a310840a6c60a7f5046d2ccaf45646a761bd4f"
+  integrity sha512-wT+Ehsoq2PRXqpgjebygHD01BpSlaAE4HfDEVxgPVT8oAsLzE4ywZgzI2VQZfaCdb8qLyO5+WXrLSoJXxDBo2Q==
   dependencies:
-    "@ampproject/toolbox-core" "^2.5.4"
+    "@ampproject/toolbox-core" "^2.6.0"
 
 "@ampproject/toolbox-script-csp@^2.5.4":
   version "2.5.4"
@@ -4143,6 +4144,13 @@ agent-base@4, agent-base@^4.3.0:
   dependencies:
     es6-promisify "^5.0.0"
 
+agent-base@6:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-6.0.1.tgz#808007e4e5867decb0ab6ab2f928fbdb5a596db4"
+  integrity sha512-01q25QQDwLSsyfhrKbn8yuur+JNw0H+0Y4JiGIKd3z9aYk/w/2kxD/Upc+t2ZBBSUNff50VjPsSW2YxM8QYKVg==
+  dependencies:
+    debug "4"
+
 agent-base@~4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.2.1.tgz#d89e5999f797875674c07d87f260fc41e83e8ca9"
@@ -6473,6 +6481,13 @@ cssnano-preset-default@^4.0.7:
     postcss-svgo "^4.0.2"
     postcss-unique-selectors "^4.0.1"
 
+cssnano-preset-simple@1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/cssnano-preset-simple/-/cssnano-preset-simple-1.1.4.tgz#7b287a31df786348565d02342df71af8f758ac82"
+  integrity sha512-EYKDo65W+AxMViUijv/hvhbEnxUjmu3V7omcH1MatPOwjRLrAgVArUOE8wTUyc1ePFEtvV8oCT4/QSRJDorm/A==
+  dependencies:
+    postcss "^7.0.32"
+
 cssnano-preset-simple@1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/cssnano-preset-simple/-/cssnano-preset-simple-1.1.7.tgz#38378118f156b3f4bf85c38a0b2fd06a1bdc7228"
@@ -6481,6 +6496,14 @@ cssnano-preset-simple@1.1.7:
     caniuse-lite "^1.0.30001093"
     postcss "^7.0.32"
 
+cssnano-simple@1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/cssnano-simple/-/cssnano-simple-1.0.5.tgz#66ee528f3a4e60754e2625ea9f51ac315f5f0a92"
+  integrity sha512-NJjx2Er1C3pa75v1GwMKm0w6xAp1GsW2Ql1As4CWPNFxTgYFN5e8wblYeHfna13sANAhyIdSIPqKJjBO4CU5Eg==
+  dependencies:
+    cssnano-preset-simple "1.1.4"
+    postcss "^7.0.32"
+
 cssnano-simple@1.0.7:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/cssnano-simple/-/cssnano-simple-1.0.7.tgz#a812571ee6ae25817434d4b926d5e83ea4b0e7dd"
@@ -6507,15 +6530,6 @@ cssnano-util-same-parent@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/cssnano-util-same-parent/-/cssnano-util-same-parent-4.0.1.tgz#574082fb2859d2db433855835d9a8456ea18bbf3"
 
-cssnano@4.1.10, cssnano@^4.1.10, cssnano@^4.1.7:
-  version "4.1.10"
-  resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-4.1.10.tgz#0ac41f0b13d13d465487e111b778d42da631b8b2"
-  dependencies:
-    cosmiconfig "^5.0.0"
-    cssnano-preset-default "^4.0.7"
-    is-resolvable "^1.0.0"
-    postcss "^7.0.0"
-
 cssnano@^3.10.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-3.10.0.tgz#4f38f6cea2b9b17fa01490f23f1dc68ea65c1c38"
@@ -6553,6 +6567,15 @@ cssnano@^3.10.0:
     postcss-value-parser "^3.2.3"
     postcss-zindex "^2.0.1"
 
+cssnano@^4.1.10, cssnano@^4.1.7:
+  version "4.1.10"
+  resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-4.1.10.tgz#0ac41f0b13d13d465487e111b778d42da631b8b2"
+  dependencies:
+    cosmiconfig "^5.0.0"
+    cssnano-preset-default "^4.0.7"
+    is-resolvable "^1.0.0"
+    postcss "^7.0.0"
+
 csso@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/csso/-/csso-4.0.2.tgz#e5f81ab3a56b8eefb7f0092ce7279329f454de3d"
@@ -6674,7 +6697,7 @@ debug@3.1.0:
   dependencies:
     ms "2.0.0"
 
-debug@4.1.1, debug@^4.0.1, debug@^4.1.0, debug@^4.1.1:
+debug@4, debug@4.1.1, debug@^4.0.1, debug@^4.1.0, debug@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
   dependencies:
@@ -8886,6 +8909,14 @@ https-browserify@^1.0.0:
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-1.0.0.tgz#ec06c10e0a34c0f2faf199f7fd7fc78fffd03c73"
   integrity sha1-7AbBDgo0wPL68Zn3/X/Hj//QPHM=
 
+https-proxy-agent@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-5.0.0.tgz#e2a90542abb68a762e0a0850f6c9edadfd8506b2"
+  integrity sha512-EkYm5BcKUGiduxzSt3Eppko+PiNWNEpa4ySk9vTC6wDsQJW9rHSa+UhGNJoRYp7bz6Ht1eaRIa6QaJqO5rCFbA==
+  dependencies:
+    agent-base "6"
+    debug "4"
+
 https-proxy-agent@^2.2.0, https-proxy-agent@^2.2.1, https-proxy-agent@^2.2.3:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-2.2.4.tgz#4ee7a737abd92678a293d9b34a1af4d0d08c787b"
@@ -11113,6 +11144,13 @@ lru-cache@5.1.1, lru-cache@^5.1.1:
   dependencies:
     yallist "^3.0.2"
 
+lru-cache@6.0.0, lru-cache@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
+  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
+  dependencies:
+    yallist "^4.0.0"
+
 lru-cache@^4.0.0, lru-cache@^4.0.1:
   version "4.1.5"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.5.tgz#8bbe50ea85bed59bc9e33dcab8235ee9bcf443cd"
@@ -11120,13 +11158,6 @@ lru-cache@^4.0.0, lru-cache@^4.0.1:
     pseudomap "^1.0.2"
     yallist "^2.1.2"
 
-lru-cache@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
-  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
-  dependencies:
-    yallist "^4.0.0"
-
 lru_map@^0.3.3:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/lru_map/-/lru_map-0.3.3.tgz#b5c8351b9464cbd750335a79650a0ec0e56118dd"