chore(deps-dev): bump postcss

Bumps the npm_and_yarn group with 1 update in the /webui directory: [postcss](https://github.com/postcss/postcss).


Updates `postcss` from 8.5.8 to 8.5.10
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.5.8...8.5.10)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.10
  dependency-type: direct:development
  dependency-group: npm_and_yarn
...

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

webui/package.json

@@ -20,7 +20,7 @@
     "devDependencies": {
         "@vitejs/plugin-react": "^6.0.1",
         "autoprefixer": "^10.4.24",
-        "postcss": "^8.5.6",
+        "postcss": "^8.5.10",
         "tailwindcss": "^3.4.19",
         "vite": "^8.0.5"
     }