Build: Bump karma from 6.3.14 to 6.3.16

Bumps [karma](https://github.com/karma-runner/karma) from 6.3.14 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@v6.3.14...v6.3.16)

Closes gh-457

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

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

Author: dependabot[bot]

package-lock.json

@@ -41,7 +41,7 @@
 		"grunt-karma": "4.0.0",
 		"grunt-npmcopy": "0.2.0",
 		"gzip-js": "0.3.2",
-		"karma": "6.3.14",
+		"karma": "6.3.16",
 		"karma-browserstack-launcher": "1.6.0",
 		"karma-chrome-launcher": "3.1.0",
 		"karma-firefox-launcher": "2.1.0",