build(deps): bump postcss-selector-parser from 6.0.5 to 6.0.6 (#3865)

Bumps [postcss-selector-parser](https://github.com/postcss/postcss-selector-parser) from 6.0.5 to 6.0.6.
- [Release notes](https://github.com/postcss/postcss-selector-parser/releases)
- [Changelog](https://github.com/postcss/postcss-selector-parser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss-selector-parser/compare/v6.0.5...v6.0.6)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

yarn.lock

@@ -5520,9 +5520,9 @@ postcss-modules@^4.0.0:
     string-hash "^1.1.1"
 
 postcss-selector-parser@^6.0.2, postcss-selector-parser@^6.0.4:
-  version "6.0.5"
-  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-6.0.5.tgz#042d74e137db83e6f294712096cb413f5aa612c4"
-  integrity sha512-aFYPoYmXbZ1V6HZaSvat08M97A8HqO6Pjz+PiNpw/DhuRrC72XWAdp3hL6wusDCN31sSmcZyMGa2hZEuX+Xfhg==
+  version "6.0.6"
+  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-6.0.6.tgz#2c5bba8174ac2f6981ab631a42ab0ee54af332ea"
+  integrity sha512-9LXrvaaX3+mcv5xkg5kFwqSzSH1JIObIx51PrndZwlmznwXRfxMddDvo9gve3gVR8ZTKgoFDdWkbRFmEhT4PMg==
   dependencies:
     cssesc "^3.0.0"
     util-deprecate "^1.0.2"