Bump css-loader from 0.28.11 to 1.0.0 in /apps/oauth2

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 0.28.11 to 1.0.0.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/css-loader/compare/v0.28.11...v1.0.0)

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

apps/oauth2/package.json

@@ -20,7 +20,7 @@
     "vue": "^2.5.16"
   },
   "devDependencies": {
-    "css-loader": "^0.28.11",
+    "css-loader": "^1.0.0",
     "file-loader": "^1.1.11",
     "vue-loader": "^15.2.4",
     "vue-template-compiler": "^2.5.16",