security: upgrade parcel-bundler from 1.12.4 to 1.12.5 (#3161)

Upgrade parcel-bundler due to a transitive dependency on is-svg.
This resolves CVE-2021-28092.

package.json

@@ -65,7 +65,7 @@
     "eslint-plugin-prettier": "^3.1.0",
     "istanbul-badges-readme": "^1.2.0",
     "leaked-handles": "^5.2.0",
-    "parcel-bundler": "^1.12.4",
+    "parcel-bundler": "^1.12.5",
     "prettier": "^2.2.1",
     "prettier-plugin-sh": "^0.6.0",
     "shellcheck": "^1.0.0",