Chore(deps): Bump postcss-selector-parser in /Website (#3661)

Bumps [postcss-selector-parser](https://github.com/postcss/postcss-selector-parser) from 6.1.2 to 6.1.5.
- [Release notes](https://github.com/postcss/postcss-selector-parser/releases)
- [Changelog](https://github.com/postcss/postcss-selector-parser/blob/6.1.5/CHANGELOG.md)
- [Commits](postcss/postcss-selector-parser@v6.1.2...6.1.5)

---
updated-dependencies:
- dependency-name: postcss-selector-parser
  dependency-version: 6.1.5
  dependency-type: indirect
...

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

Author: dependabot[bot]

Website/yarn.lock

@@ -7478,17 +7478,17 @@ postcss-selector-not@^8.0.1:
     postcss-selector-parser "^7.0.0"
 
 postcss-selector-parser@^6.0.11, postcss-selector-parser@^6.0.16:
-  version "6.1.2"
-  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-6.1.2.tgz#27ecb41fb0e3b6ba7a1ec84fff347f734c7929de"
-  integrity sha512-Q8qQfPiZ+THO/3ZrOrO0cJJKfpYCagtMUkXbnEfmgUjwXg6z/WBeOyS9APBBPCTSiDV+s4SwQGu8yFsiMRIudg==
+  version "6.1.5"
+  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-6.1.5.tgz#20e988ce8eab87575d54824d9800236c5fd872ca"
+  integrity sha512-TEHFzb5KRDKaOgJ4TYE+0jyJtFbjLvkdVOu0fZ2b6MTWzoqZd4Le+61aEppWkvTlYePgOX4ATL1wsAIPMLTw6Q==
   dependencies:
     cssesc "^3.0.0"
     util-deprecate "^1.0.2"
 
 postcss-selector-parser@^7.0.0:
-  version "7.1.0"
-  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-7.1.0.tgz#4d6af97eba65d73bc4d84bcb343e865d7dd16262"
-  integrity sha512-8sLjZwK0R+JlxlYcTuVnyT2v+htpdrjDOKuMcOVdYjt52Lh8hWRYpxBPoKx/Zg+bcjc3wx6fmQevMmUztS/ccA==
+  version "7.1.7"
+  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-7.1.7.tgz#70e353032ced41529d70b7662227a74eb001d31b"
+  integrity sha512-wWBro/7hJ40ye6TPiXkUQoXKCw23xSsjriUvqd7Uls9Sso3oLiON1flc18cCdnjgCRXw4fBVqUJJeOdDTh3P3g==
   dependencies:
     cssesc "^3.0.0"
     util-deprecate "^1.0.2"