chore(deps-dev): bump karma from 6.3.9 to 6.3.16

Bumps [karma](https://github.com/karma-runner/karma) from 6.3.9 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@v6.3.9...v6.3.16)

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

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

package.json

@@ -19,7 +19,7 @@
   "devDependencies": {
     "jasmine-core": "^2.3.4",
     "jspm": "^0.16.55",
-    "karma": "^6.3.9",
+    "karma": "^6.3.16",
     "karma-chrome-launcher": "^0.1.12",
     "karma-jasmine": "^0.2.2",
     "karma-jspm": "^2.0.1",