build(deps-dev): bump postcss from 8.4.40 to 8.4.47

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.40 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@8.4.40...8.4.47)

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

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

package.json

@@ -123,7 +123,7 @@
     "ng-packagr": "18.1.0",
     "ngx-build-plus": "^18.0.0",
     "ngx-translate-testing": "^7.0.0",
-    "postcss": "8.4.40",
+    "postcss": "8.4.47",
     "postcss-import": "~16.1.0",
     "postcss-preset-env": "~10.0.2",
     "postcss-url": "~10.1.3",