Bump karma from 3.1.3 to 3.1.4 in /js

Bumps [karma](https://github.com/karma-runner/karma) from 3.1.3 to 3.1.4.
- [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/v3.1.3...v3.1.4)

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

js/package.json

@@ -27,7 +27,7 @@
     "@babel/preset-env": "^7.2.0",
     "babel-loader": "^8.0.4",
     "css-loader": "^2.0.2",
-    "karma": "^3.1.3",
+    "karma": "^3.1.4",
     "mini-css-extract-plugin": "^0.5.0",
     "uglifyjs-webpack-plugin": "^2.0.1",
     "webpack": "^4.27.1",