Update dependency karma-webpack to v4.0.0-rc.6

package.json

@@ -95,7 +95,7 @@
     "karma": "4.0.0",
     "karma-firefox-launcher": "1.1.0",
     "karma-jasmine": "2.0.1",
-    "karma-webpack": "4.0.0-rc.5",
+    "karma-webpack": "4.0.0-rc.6",
     "prettier": "1.16.3",
     "webpack-dev-server": "3.1.14"
   },

yarn.lock

@@ -6115,10 +6115,10 @@ karma-jasmine@2.0.1:
   dependencies:
     jasmine-core "^3.3"
 
-karma-webpack@4.0.0-rc.5:
-  version "4.0.0-rc.5"
-  resolved "https://registry.yarnpkg.com/karma-webpack/-/karma-webpack-4.0.0-rc.5.tgz#7282945c9af56d9fc6e0bb053df9afc73dae1b15"
-  integrity sha512-JCFLWIpX1Yx/pX086/2K+c1QdsPQI3K4HVcCo4QzYPWvu7rHOHMV2d3YYVMqL1mZd7iqFlcU8vBO8xKH4CpTyg==
+karma-webpack@4.0.0-rc.6:
+  version "4.0.0-rc.6"
+  resolved "https://registry.yarnpkg.com/karma-webpack/-/karma-webpack-4.0.0-rc.6.tgz#02ac6a47c7fc166c8b208446069a424698082405"
+  integrity sha512-fN3EfHc10bZxP7dqgsaIFdmkynABFsgMxqgVZJYqxzt0CDBH6j1LbHrMilnijnDYZ8fZDLtx/OKWshXiYyhIig==
   dependencies:
     async "^2.0.0"
     loader-utils "^1.1.0"