build: 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

@@ -21,7 +21,7 @@
     "classnames": "^2.2.5",
     "compression-webpack-plugin": "^1.1.11",
     "core-js": "2.5.4",
-    "css-loader": "^0.28.10",
+    "css-loader": "^0.28.11",
     "emoji-mart": "2.5.1",
     "exenv": "1.2.2",
     "extract-text-webpack-plugin": "^3.0.0",

yarn.lock

@@ -2054,9 +2054,9 @@ css-color-names@0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/css-color-names/-/css-color-names-0.0.4.tgz#808adc2e79cf84738069b646cb20ec27beb629e0"
 
-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"