Bump postcss-nesting from 13.0.2 to 14.0.0

Bumps [postcss-nesting](https://github.com/csstools/postcss-plugins/tree/HEAD/plugins/postcss-nesting) from 13.0.2 to 14.0.0.
- [Changelog](https://github.com/csstools/postcss-plugins/blob/main/plugins/postcss-nesting/CHANGELOG.md)
- [Commits](https://github.com/csstools/postcss-plugins/commits/HEAD/plugins/postcss-nesting)

---
updated-dependencies:
- dependency-name: postcss-nesting
  dependency-version: 14.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -35,7 +35,7 @@
     "autoprefixer": "^10.4.24",
     "docusaurus-plugin-module-alias": "^0.0.2",
     "fast-check": "^4.5.3",
-    "postcss-nesting": "^13.0.2",
+    "postcss-nesting": "^14.0.0",
     "prettier": "^3.8.1",
     "tsm": "^2.3.0",
     "typescript": "^5.9.3",