build(deps-dev): bump postcss from 8.4.14 to 8.4.16 (webpack#6323)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.14 to 8.4.16.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.14...8.4.16)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -113,7 +113,7 @@
     "modularscale-sass": "^3.0.3",
     "node-fetch": "^3.2.10",
     "npm-run-all": "^4.1.1",
-    "postcss": "^8.4.14",
+    "postcss": "^8.4.16",
     "postcss-loader": "^7.0.1",
     "prettier": "^2.7.1",
     "react-refresh": "^0.14.0",

yarn.lock

@@ -9624,10 +9624,10 @@ postcss@^5.0.8, postcss@^5.2.4:
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
-postcss@^8.3.10, postcss@^8.4.13, postcss@^8.4.14, postcss@^8.4.7:
-  version "8.4.14"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.14.tgz#ee9274d5622b4858c1007a74d76e42e56fd21caf"
-  integrity sha512-E398TUmfAYFPBSdzgeieK2Y1+1cpdxJx8yXbK/m57nRhKSmk1GB2tO4lbLBtlkfPQTDKfe4Xqv1ASWPpayPEig==
+postcss@^8.3.10, postcss@^8.4.13, postcss@^8.4.14, postcss@^8.4.16, postcss@^8.4.7:
+  version "8.4.16"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.16.tgz#33a1d675fac39941f5f445db0de4db2b6e01d43c"
+  integrity sha512-ipHE1XBvKzm5xI7hiHCZJCSugxvsdq2mPnsq5+UF+VHCjiBvtDrlxJfMBToWaP9D5XlgNmcFGqoHmUn0EYEaRQ==
   dependencies:
     nanoid "^3.3.4"
     picocolors "^1.0.0"