Bump stylelint-config-standard from 18.2.0 to 18.3.0 (#39)

Bumps [stylelint-config-standard](https://github.com/stylelint/stylelint-config-standard) from 18.2.0 to 18.3.0.
- [Release notes](https://github.com/stylelint/stylelint-config-standard/releases)
- [Changelog](https://github.com/stylelint/stylelint-config-standard/blob/master/CHANGELOG.md)
- [Commits](stylelint/stylelint-config-standard@18.2.0...18.3.0)

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

Author: dependabot[bot]

package-lock.json

@@ -7,7 +7,7 @@
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-plugin-import": "^2.14.0",
     "stylelint": "^9.10.1",
-    "stylelint-config-standard": "^18.2.0"
+    "stylelint-config-standard": "^18.3.0"
   },
   "scripts": {
     "lint:js": "eslint --ext .js,.json --ignore-path .gitignore .",