Bump karma from 3.1.4 to 4.0.0 in /js

Bumps [karma](https://github.com/karma-runner/karma) from 3.1.4 to 4.0.0.
- [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/v3.1.4...v4.0.0)

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

js/package-lock.json

@@ -3289,9 +3289,9 @@
       }
     },
     "follow-redirects": {
-      "version": "1.5.10",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
-      "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
+      "version": "1.6.1",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.6.1.tgz",
+      "integrity": "sha512-t2JCjbzxQpWvbhts3l6SH1DKzSrx8a+SsaVf4h6bG4kOXUuPYS/kg2Lr4gQSb7eemaHqJkOThF1BGyjlUkO1GQ==",
       "dev": true,
       "requires": {
         "debug": "=3.1.0"
@@ -4568,9 +4568,9 @@
       "dev": true
     },
     "karma": {
-      "version": "3.1.4",
-      "resolved": "https://registry.npmjs.org/karma/-/karma-3.1.4.tgz",
-      "integrity": "sha512-31Vo8Qr5glN+dZEVIpnPCxEGleqE0EY6CtC2X9TagRV3rRQ3SNrvfhddICkJgUK3AgqpeKSZau03QumTGhGoSw==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/karma/-/karma-4.0.0.tgz",
+      "integrity": "sha512-EFoFs3F6G0BcUGPNOn/YloGOb3h09hzTguyXlg6loHlKY76qbJikkcyPk43m2kfRF65TUGda/mig29QQtyhm1g==",
       "dev": true,
       "requires": {
         "bluebird": "^3.3.0",

js/package.json

@@ -27,7 +27,7 @@
     "@babel/preset-env": "^7.2.3",
     "babel-loader": "^8.0.5",
     "css-loader": "^2.1.0",
-    "karma": "^3.1.4",
+    "karma": "^4.0.0",
     "mini-css-extract-plugin": "^0.5.0",
     "uglifyjs-webpack-plugin": "^2.1.1",
     "webpack": "^4.28.4",