Update dependency css-loader to v0.28.11

Author: renovate-bot

package.json

@@ -51,7 +51,7 @@
     "babel-preset-es2015": "6.24.1",
     "babel-preset-react": "6.24.1",
     "codemirror": "5.33.0",
-    "css-loader": "0.28.9",
+    "css-loader": "0.28.11",
     "eslint": "4.16.0",
     "eslint-plugin-react": "7.5.1",
     "extract-text-webpack-plugin": "3.0.2",

yarn.lock

@@ -1845,9 +1845,9 @@ [email protected]:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/css-color-names/-/css-color-names-0.0.4.tgz#808adc2e79cf84738069b646cb20ec27beb629e0"
 
-[email protected].9:
-  version "0.28.9"
-  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-0.28.9.tgz#68064b85f4e271d7ce4c48a58300928e535d1c95"
+[email protected].11:
+  version "0.28.11"
+  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-0.28.11.tgz#c3f9864a700be2711bb5a2462b2389b1a392dab7"
   dependencies:
     babel-code-frame "^6.26.0"
     css-selector-tokenizer "^0.7.0"