Bump css-loader from 0.28.10 to 0.28.11

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 0.28.10 to 0.28.11.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/css-loader@v0.28.10...v0.28.11)

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

package.json

@@ -23,7 +23,7 @@
     "babel-preset-stage-0": "^6.16.0",
     "copy-webpack-plugin": "^4.5.1",
     "css-declaration-sorter": "^2.1.0",
-    "css-loader": "^0.28.10",
+    "css-loader": "^0.28.11",
     "css-mqpacker": "^6.0.2",
     "extract-text-webpack-plugin": "^3.0.0",
     "file-loader": "^1.1.11",

yarn.lock

@@ -2025,9 +2025,9 @@ css-declaration-sorter@^2.1.0:
     timsort "^0.3.0"
     write-file-stdout "0.0.2"
 
-css-loader@^0.28.10:
-  version "0.28.10"
-  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-0.28.10.tgz#40282e79230f7bcb4e483efa631d670b735ebf42"
+css-loader@^0.28.11:
+  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"