Bump stylelint from 13.6.1 to 13.7.0

Bumps [stylelint](https://github.com/stylelint/stylelint) from 13.6.1 to 13.7.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/master/CHANGELOG.md)
- [Commits](stylelint/stylelint@13.6.1...13.7.0)

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

package.json

@@ -132,7 +132,7 @@
     "rollup-plugin-istanbul": "^2.0.1",
     "shelljs": "^0.8.4",
     "sirv-cli": "^1.0.6",
-    "stylelint": "^13.6.1",
+    "stylelint": "^13.7.0",
     "stylelint-config-twbs-bootstrap": "^2.0.3",
     "terser": "^5.1.0",
     "vnu-jar": "20.6.30"