Bump karma from 4.0.0 to 4.0.1 in /js

Bumps [karma](https://github.com/karma-runner/karma) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/karma/compare/v4.0.0...v4.0.1)

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

js/package.json

@@ -27,7 +27,7 @@
     "@babel/preset-env": "^7.3.1",
     "babel-loader": "^8.0.5",
     "css-loader": "^2.1.0",
-    "karma": "^4.0.0",
+    "karma": "^4.0.1",
     "mini-css-extract-plugin": "^0.5.0",
     "uglifyjs-webpack-plugin": "^2.1.1",
     "webpack": "^4.29.5",