Bump postcss from 8.4.38 to 8.4.44 in /frontend

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.38 to 8.4.44.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.38...8.4.44)

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

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -34,7 +34,7 @@
     "intl-messageformat": "^10.5.14",
     "next": "14.2.3",
     "next-themes": "^0.2.1",
-    "postcss": "8.4.38",
+    "postcss": "8.4.44",
     "react": "18.3.1",
     "react-dom": "18.2.0",
     "tailwind-variants": "^0.2.1",