build(deps-dev): bump postcss from 8.4.38 to 8.4.47

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.38 to 8.4.47.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.38...8.4.47)

---
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

@@ -52,7 +52,7 @@
     "npm-check-updates": "16.14.20",
     "npm-package-json-lint": "8.0.0",
     "nx": "15.9.7",
-    "postcss": "8.4.38",
+    "postcss": "8.4.47",
     "prettier": "2.8.8",
     "rimraf": "5.0.7",
     "stylelint": "16.6.1",

packages/component-library-css/package.json

@@ -22,7 +22,7 @@
   "devDependencies": {
     "@utrecht/components": "workspace:*",
     "@utrecht/html-content-css": "workspace:*",
-    "postcss": "8.4.38",
+    "postcss": "8.4.47",
     "postcss-discard-duplicates": "7.0.0",
     "postcss-logical": "7.0.1",
     "rimraf": "5.0.7",