deps: bump postcss-loader from 8.1.1 to 8.2.0

Bumps [postcss-loader](https://github.com/webpack-contrib/postcss-loader) from 8.1.1 to 8.2.0.
- [Release notes](https://github.com/webpack-contrib/postcss-loader/releases)
- [Changelog](https://github.com/webpack-contrib/postcss-loader/blob/master/CHANGELOG.md)
- [Commits](webpack/postcss-loader@v8.1.1...v8.2.0)

---
updated-dependencies:
- dependency-name: postcss-loader
  dependency-version: 8.2.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -69,7 +69,7 @@
         "jest-environment-jsdom": "^30.0.5",
         "mini-css-extract-plugin": "^2.9.2",
         "postcss": "^8.5.6",
-        "postcss-loader": "^8.1.1",
+        "postcss-loader": "^8.2.0",
         "prettier": "^3.6.2",
         "prettier-plugin-tailwindcss": "^0.6.14",
         "tailwindcss": "^4.1.11",