Bump stylelint-config-standard from 19.0.0 to 20.0.0

Bumps [stylelint-config-standard](https://github.com/stylelint/stylelint-config-standard) from 19.0.0 to 20.0.0.
- [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@19.0.0...20.0.0)

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

package.json

@@ -76,7 +76,7 @@
     "sass-loader": "^7.3.1",
     "style-loader": "^1.1.3",
     "stylelint": "^12.0.1",
-    "stylelint-config-standard": "^19.0.0",
+    "stylelint-config-standard": "^20.0.0",
     "stylelint-order": "^4.0.0",
     "stylelint-scss": "^3.14.2",
     "uglifyjs-3-webpack-plugin": "^1.2.4",