chore(deps-dev): bump postcss from 8.4.47 to 8.4.48 in /ui (#3602)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.47 to 8.4.48.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.47...8.4.48)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

ui/package.json

@@ -90,7 +90,7 @@
     "jest-environment-jsdom": "^29.7.0",
     "package-changed": "^3.0.0",
     "playwright": "^1.47.0",
-    "postcss": "^8.4.47",
+    "postcss": "^8.4.48",
     "prettier": "^3.3.3",
     "prettier-plugin-organize-imports": "^3.2.4",
     "prettier-plugin-tailwindcss": "^0.6.8",