build(deps-dev): bump postcss from 8.5.16 to 8.5.25 in /ui/mantine-ui in the styles group (#5425)

build(deps-dev): bump postcss in /ui/mantine-ui in the styles group

Bumps the styles group in /ui/mantine-ui with 1 update: [postcss](https://github.com/postcss/postcss).


Updates `postcss` from 8.5.16 to 8.5.25
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.16...8.5.25)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.25
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: styles
...

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Author: dependabot[bot]

ui/mantine-ui/package-lock.json

@@ -38,7 +38,7 @@
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^6.0.3",
     "jsdom": "^29.1.1",
-    "postcss": "^8.5.15",
+    "postcss": "^8.5.25",
     "postcss-preset-mantine": "1.18.0",
     "postcss-simple-vars": "^7.0.1",
     "prop-types": "^15.8.1",