Added new css-loader

Signed-off-by: Martin Vala <mavala@redhat.com>

Author: mvalarh

frontend/package-lock.json

@@ -38,7 +38,7 @@
     "connected-react-router": "~6.9.1",
     "copy-to-clipboard": "~3.3.1",
     "copy-webpack-plugin": "~5.1.2",
-    "css-loader": "~3.6.0",
+    "css-loader": "~5.2.7",
     "dateformat": "~3.0.3",
     "eslint": "~6.8.0",
     "eslint-plugin-patternfly-react": "~0.2.3",