chore(deps-dev): bump karma from 5.2.3 to 6.2.0

Bumps [karma](https://github.com/karma-runner/karma) from 5.2.3 to 6.2.0.
- [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/v5.2.3...v6.2.0)

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

package.json

@@ -39,7 +39,7 @@
     "codelyzer": "^6.0.1",
     "jasmine-core": "^3.6.0",
     "jasmine-spec-reporter": "^6.0.0",
-    "karma": "^5.2.3",
+    "karma": "^6.2.0",
     "karma-chrome-launcher": "^3.1.0",
     "karma-coverage-istanbul-reporter": "^3.0.3",
     "karma-jasmine": "^4.0.1",