Bump stylelint from 10.1.0 to 13.12.0

Bumps [stylelint](https://github.com/stylelint/stylelint) from 10.1.0 to 13.12.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stylelint/stylelint/compare/10.1.0...13.12.0)

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

package.json

@@ -65,7 +65,7 @@
     "semver": "5.7.1",
     "style-loader": "^0.18.2",
     "styled-components": "4.1.2",
-    "stylelint": "^10.1.0",
+    "stylelint": "^13.12.0",
     "stylelint-config-primer": "^11.0.1",
     "stylelint-disable": "^0.1.5",
     "stylelint-only": "^1.0.1",