chore(deps-dev): bump karma from 6.3.20 to 6.4.2 (#6616)

Bumps [karma](https://github.com/karma-runner/karma) from 6.3.20 to 6.4.2.
- [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/v6.3.20...v6.4.2)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -32,7 +32,7 @@
     "html2canvas": "1.4.1",
     "imports-loader": "4.0.1",
     "jasmine-core": "4.5.0",
-    "karma": "6.3.20",
+    "karma": "6.4.2",
     "karma-chrome-launcher": "3.1.1",
     "karma-cli": "2.0.0",
     "karma-coverage": "2.2.0",