Chore(deps): Bump postcss-selector-parser, postcss-modules-local-by-default and postcss-modules-scope

Bumps [postcss-selector-parser](https://github.com/postcss/postcss-selector-parser), [postcss-modules-local-by-default](https://github.com/css-modules/postcss-modules-local-by-default) and [postcss-modules-scope](https://github.com/css-modules/postcss-modules-scope). These dependencies needed to be updated together.

Updates `postcss-selector-parser` from 7.1.4 to 7.1.6
- [Release notes](https://github.com/postcss/postcss-selector-parser/releases)
- [Changelog](https://github.com/postcss/postcss-selector-parser/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss-selector-parser@7.1.4...7.1.6)

Updates `postcss-modules-local-by-default` from 4.0.5 to 4.2.0
- [Release notes](https://github.com/css-modules/postcss-modules-local-by-default/releases)
- [Changelog](https://github.com/css-modules/postcss-modules-local-by-default/blob/master/CHANGELOG.md)
- [Commits](css-modules/postcss-modules-local-by-default@v4.0.5...v4.2.0)

Updates `postcss-modules-scope` from 3.2.0 to 3.2.1
- [Release notes](https://github.com/css-modules/postcss-modules-scope/releases)
- [Changelog](https://github.com/css-modules/postcss-modules-scope/blob/master/CHANGELOG.md)
- [Commits](css-modules/postcss-modules-scope@v3.2.0...v3.2.1)

---
updated-dependencies:
- dependency-name: postcss-selector-parser
  dependency-version: 7.1.6
  dependency-type: indirect
- dependency-name: postcss-modules-local-by-default
  dependency-version: 4.2.0
  dependency-type: indirect
- dependency-name: postcss-modules-scope
  dependency-version: 3.2.1
  dependency-type: indirect
...

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Author: dependabot[bot]