build(deps): bump postcss from 8.4.14 to 8.4.16 (#1039)

* build(deps): bump postcss from 8.4.14 to 8.4.16

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](https://github.com/postcss/postcss/compare/8.4.14...8.4.16)

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

Signed-off-by: dependabot[bot] <support@github.com>

* [dependabot skip] Fix yarn.lock

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot-fix <dependabot-fix@example.com>
Co-authored-by: David Lechner <david@pybricks.com>

package.json

@@ -76,7 +76,7 @@
         "monaco-themes": "^0.4.2",
         "mq-polyfill": "1.1.8",
         "navigator.locks": "^0.8.5",
-        "postcss": "^8.4.4",
+        "postcss": "^8.4.16",
         "postcss-flexbugs-fixes": "^5.0.2",
         "postcss-loader": "^7.0.1",
         "postcss-normalize": "^10.0.1",