Bump karma-webpack from 2.0.13 to 3.0.5 (#925)

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/codymikol/karma-webpack/blob/v3.0.5/CHANGELOG.md)
- [Commits](codymikol/karma-webpack@v2.0.13...v3.0.5)

---
updated-dependencies:
- dependency-name: karma-webpack
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -96,7 +96,7 @@
     "karma-chrome-launcher": "^2.2.0",
     "karma-jasmine": "^2.0.0",
     "karma-sourcemap-loader": "^0.3.8",
-    "karma-webpack": "^2.0.4",
+    "karma-webpack": "^3.0.5",
     "sinon": "^4.0.0"
   }
 }