Chore(deps-dev): Bump @nextcloud/stylelint-config from 3.0.1 to 3.1.0

---
updated-dependencies:
- dependency-name: "@nextcloud/stylelint-config"
  dependency-version: 3.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]