build(deps-dev): bump postcss from 8.4.21 to 8.4.38

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.21 to 8.4.38.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.21...8.4.38)

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

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

package.json

@@ -100,7 +100,7 @@
     "jest-environment-jsdom": "^29.4.1",
     "lint-staged": "^15.2.5",
     "nx": "19.1.1",
-    "postcss": "8.4.21",
+    "postcss": "8.4.38",
     "prettier": "^3.2.5",
     "prettier-plugin-packagejson": "^2.5.0",
     "prettier-plugin-tailwindcss": "^0.6.0",