Bump postcss-loader from 5.3.0 to 6.1.0

Bumps [postcss-loader](https://github.com/webpack-contrib/postcss-loader) from 5.3.0 to 6.1.0.
- [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/v5.3.0...v6.1.0)

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

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

package.json

@@ -64,7 +64,7 @@
   "mini-css-extract-plugin": "^1.6.0",
   "npm-run-all": "^4.1.5",
   "postcss": "^8.3.2",
-  "postcss-loader": "^5.3.0",
+  "postcss-loader": "^6.1.0",
   "prettier": "^2.3.1",
   "release-it": "^14.8.0",
   "sass": "^1.34.1",

yarn.lock

@@ -6757,14 +6757,14 @@ posix-character-classes@^0.1.0:
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
   integrity sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=
 
-postcss-loader@^5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-5.3.0.tgz#1657f869e48d4fdb018a40771c235e499ee26244"
-  integrity sha512-/+Z1RAmssdiSLgIZwnJHwBMnlABPgF7giYzTN2NOfr9D21IJZ4mQC1R2miwp80zno9M4zMD/umGI8cR+2EL5zw==
+postcss-loader@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-6.1.0.tgz#13c800a00b3c7d434a1319a73d85e2df0714cdde"
+  integrity sha512-yA/cXBfACkthZNA2hQxOnaReVfQ6uLmvbEDQzNafpbK40URZJvP/28dL1DG174Gvz3ptkkHbbwDBCh+gXR94CA==
   dependencies:
     cosmiconfig "^7.0.0"
     klona "^2.0.4"
-    semver "^7.3.4"
+    semver "^7.3.5"
 
 postcss-modules-extract-imports@^3.0.0:
   version "3.0.0"