Bump karma from 4.2.0 to 4.3.0

Bumps [karma](https://github.com/karma-runner/karma) from 4.2.0 to 4.3.0.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma@v4.2.0...v4.3.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -65,7 +65,7 @@
     "jasmine-core": "~3.4.0",
     "jasmine-spec-reporter": "~4.2.1",
     "json-server": "^0.15.0",
-    "karma": "^4.2.0",
+    "karma": "^4.3.0",
     "karma-chrome-launcher": "~3.1.0",
     "karma-coverage-istanbul-reporter": "^2.1.0",
     "karma-jasmine": "~2.0.1",