Bump karma-webpack from 2.0.13 to 3.0.5

Bumps [karma-webpack](https://github.com/webpack-contrib/karma-webpack) from 2.0.13 to 3.0.5.
- [Release notes](https://github.com/webpack-contrib/karma-webpack/releases)
- [Changelog](https://github.com/webpack-contrib/karma-webpack/blob/v3.0.5/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/karma-webpack/compare/v2.0.13...v3.0.5)

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

package.json

@@ -111,7 +111,7 @@
     "karma-mocha": "^1.2.0",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-spec-reporter": "^0.0.31",
-    "karma-webpack": "^2.0.1",
+    "karma-webpack": "^3.0.5",
     "mocha": "^3.0.2",
     "multispinner": "^0.2.1",
     "node-loader": "^0.6.0",