Bump @nextcloud/stylelint-config from 1.0.0-beta.0 to 2.1.2

Bumps [@nextcloud/stylelint-config](https://github.com/nextcloud/stylelint-config) from 1.0.0-beta.0 to 2.1.2.
- [Release notes](https://github.com/nextcloud/stylelint-config/releases)
- [Changelog](https://github.com/nextcloud/stylelint-config/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nextcloud/stylelint-config/commits/v2.1.2)

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

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

package.json

@@ -73,7 +73,7 @@
 		"@nextcloud/babel-config": "^1.0.0",
 		"@nextcloud/browserslist-config": "^2.2.0",
 		"@nextcloud/eslint-config": "^6.1.2",
-		"@nextcloud/stylelint-config": "^1.0.0-beta.0",
+		"@nextcloud/stylelint-config": "^2.1.2",
 		"@nextcloud/webpack-vue-config": "^4.3.2",
 		"@relative-ci/agent": "^3.1.1",
 		"@vue/test-utils": "^1.3.0",