bump postcss from 8.4.41 to 8.5.4 (#10906)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.41 to 8.5.4.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.4.41...8.5.4)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -163,7 +163,7 @@
     "nock": "13.5.5",
     "npm-run-all": "^4.1.5",
     "nx": "^20.0.0",
-    "postcss": "8.4.41",
+    "postcss": "8.5.4",
     "postcss-sass": "^0.5.0",
     "prettier": "2.8.8",
     "resize-observer-polyfill": "^1.5.1",