Bump resolve-url-loader from 2.2.1 to 2.3.0

Bumps [resolve-url-loader](https://github.com/bholloway/resolve-url-loader) from 2.2.1 to 2.3.0.
- [Release notes](https://github.com/bholloway/resolve-url-loader/releases)
- [Commits](bholloway/resolve-url-loader@2.2.1...2.3.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

package-lock.json

@@ -13,7 +13,7 @@
     "node-sass": "^4.7.2",
     "postcss-loader": "^2.1.4",
     "prop-types": "^15.6.0",
-    "resolve-url-loader": "^2.2.1",
+    "resolve-url-loader": "^2.3.0",
     "sass-loader": "^6.0.6",
     "webpack-merge": "^4.1.2"
   },