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](https://github.com/webpack-contrib/postcss-loader/compare/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>

package.json

@@ -57,7 +57,7 @@
     "lato-font": "^3.0.0",
     "mini-css-extract-plugin": "^2.9.4",
     "postcss": "^8.5.6",
-    "postcss-loader": "^8.1.1",
+    "postcss-loader": "^8.2.0",
     "postcss-scss": "^4.0.9",
     "regenerator-runtime": "^0.14.1",
     "sass-embedded": "^1.91.0",