Bump grunt-karma from 3.0.2 to 4.0.0

Bumps [grunt-karma](https://github.com/karma-runner/grunt-karma) from 3.0.2 to 4.0.0.
- [Release notes](https://github.com/karma-runner/grunt-karma/releases)
- [Changelog](https://github.com/karma-runner/grunt-karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/grunt-karma@v3.0.2...v4.0.0)

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

package.json

@@ -32,7 +32,7 @@
     "grunt-contrib-jshint": "^2.1.0",
     "grunt-contrib-watch": "^1.1.0",
     "grunt-coveralls": "^2.0.0",
-    "grunt-karma": "^3.0.2",
+    "grunt-karma": "^4.0.0",
     "jasmine-core": "^3.5.0",
     "jshint-stylish": "^2.2.1",
     "karma": "^4.4.1",