chore(deps-dev): bump stylelint and stylelint-config-standard

Bumps [stylelint](https://github.com/stylelint/stylelint) and [stylelint-config-standard](https://github.com/stylelint/stylelint-config-standard). These dependencies needed to be updated together.

Updates `stylelint` from 15.11.0 to 16.21.0
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@15.11.0...16.21.0)

Updates `stylelint-config-standard` from 34.0.0 to 38.0.0
- [Release notes](https://github.com/stylelint/stylelint-config-standard/releases)
- [Changelog](https://github.com/stylelint/stylelint-config-standard/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint-config-standard@34.0.0...38.0.0)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-version: 16.21.0
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: stylelint-config-standard
  dependency-version: 38.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]