Bump karma from 4.1.0 to 6.3.14

Bumps [karma](https://github.com/karma-runner/karma) from 4.1.0 to 6.3.14. - [Release notes](https://github.com/karma-runner/karma/releases) - [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md) - [Commits](karma-runner/karma@v4.1.0...v6.3.14) --- updated-dependencies: - dependency-name: karma dependency-type: direct:development ... Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]