Merge pull request #19350 from Mugen87/dev45

Upgraded some dev dependencies.

package.json

@@ -85,7 +85,7 @@
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
-    "concurrently": "^5.1.0",
+    "concurrently": "^5.2.0",
     "cross-env": "^7.0.2",
     "eslint": "^6.8.0",
     "eslint-config-mdcs": "^5.0.0",
@@ -97,11 +97,11 @@
     "pixelmatch": "5.2.0",
     "pngjs": "5.0.0",
     "puppeteer": "2.1.1",
-    "qunit": "^2.9.3",
-    "rollup": "^2.3.2",
+    "qunit": "^2.10.0",
+    "rollup": "^2.10.0",
     "rollup-plugin-buble": "^0.19.8",
     "serve-handler": "^6.1.2",
-    "typescript": "^3.8.3"
+    "typescript": "^3.9.2"
   },
   "jspm": {
     "files": [