Bump karma from 3.1.4 to 6.3.16

Bumps [karma](https://github.com/karma-runner/karma) from 3.1.4 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/v3.1.4...v6.3.16

)

---
updated-dependencies:
- dependency-name: karma
  dependency-type: direct:development
...
Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -54,7 +54,7 @@
     "codelyzer": "^5.0.1",
     "jasmine-core": "~3.3.0",
     "jasmine-spec-reporter": "~4.2.1",
-    "karma": "^3.1.1",
+    "karma": "^6.3.16",
     "karma-chrome-launcher": "~2.2.0",
     "karma-coverage-istanbul-reporter": "^2.0.4",
     "karma-jasmine": "~1.1.2",