Bump karma from 6.3.20 to 6.4.0

Bumps [karma](https://github.com/karma-runner/karma) from 6.3.20 to 6.4.0.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma@v6.3.20...v6.4.0)

---
updated-dependencies:
- dependency-name: karma
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -63,7 +63,7 @@
     "eslint-plugin-mocha": "^10.0.5",
     "eslint-plugin-n": "^15.2.3",
     "eslint-plugin-unicorn": "^42.0.0",
-    "karma": "^6.3.20",
+    "karma": "^6.4.0",
     "karma-chrome-launcher": "^3.1.1",
     "karma-coverage": "^2.2.0",
     "karma-firefox-launcher": "^2.1.2",