Bump karma from 0.13.22 to 6.3.16

Bumps [karma](https://github.com/karma-runner/karma) from 0.13.22 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](karma-runner/karma@v0.13.22...v6.3.16)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -42,7 +42,7 @@
     "grunt-sass": "^2.1.0",
     "grunt-ts": "^5.3.2",
     "jasmine-core": "^2.4.1",
-    "karma": "^0.13.21",
+    "karma": "^6.3.16",
     "karma-coverage": "^0.5.3",
     "karma-jasmine": "^0.3.7",
     "karma-junit-reporter": "^0.3.8",