Bump karma from 5.2.3 to 6.3.16

Bumps [karma](https://github.com/karma-runner/karma) from 5.2.3 to 6.3.16.
- [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...v6.3.16)

---
updated-dependencies:
- dependency-name: karma
  dependency-type: direct:development
...

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

package.json

@@ -52,7 +52,7 @@
     "codelyzer": "^6.0.0",
     "jasmine-core": "~3.6.0",
     "jasmine-spec-reporter": "~6.0.0",
-    "karma": "~5.2.3",
+    "karma": "~6.3.16",
     "karma-chrome-launcher": "~3.1.0",
     "karma-coverage-istanbul-reporter": "~3.0.3",
     "karma-jasmine": "~4.0.1",