Bump karma from 5.2.3 to 6.0.1

Bumps [karma](https://github.com/karma-runner/karma) from 5.2.3 to 6.0.1.
- [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...v6.0.1)

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

package.json

@@ -77,7 +77,7 @@
     "jsdoc": "3.6.6",
     "jsdoc-plugin-typescript": "^2.0.5",
     "json-stringify-safe": "^5.0.1",
-    "karma": "^5.0.1",
+    "karma": "^6.0.1",
     "karma-chrome-launcher": "3.1.0",
     "karma-coverage-istanbul-reporter": "^3.0.0",
     "karma-firefox-launcher": "^2.0.0",