Bump postcss-loader from 6.1.1 to 6.2.0

Bumps [postcss-loader](https://github.com/webpack-contrib/postcss-loader) from 6.1.1 to 6.2.0.
- [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/v6.1.1...v6.2.0)

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

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

package-lock.json

@@ -11156,9 +11156,9 @@
       "dev": true
     },
     "postcss-loader": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/postcss-loader/-/postcss-loader-6.1.1.tgz",
-      "integrity": "sha512-lBmJMvRh1D40dqpWKr9Rpygwxn8M74U9uaCSeYGNKLGInbk9mXBt1ultHf2dH9Ghk6Ue4UXlXWwGMH9QdUJ5ug==",
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/postcss-loader/-/postcss-loader-6.2.0.tgz",
+      "integrity": "sha512-H9hv447QjQJVDbHj3OUdciyAXY3v5+UDduzEytAlZCVHCpNAAg/mCSwhYYqZr9BiGYhmYspU8QXxZwiHTLn3yA==",
       "dev": true,
       "requires": {
         "cosmiconfig": "^7.0.0",

package.json

@@ -62,7 +62,7 @@
     "mini-css-extract-plugin": "^2.4.2",
     "optimize-css-assets-webpack-plugin": "^6.0.1",
     "postcss": "^8.3.9",
-    "postcss-loader": "^6.1.1",
+    "postcss-loader": "^6.2.0",
     "prettier": "^2.4.1",
     "prettier-webpack-plugin": "^1.2.0",
     "style-loader": "^3.3.0",