Bump karma-coverage from 1.1.2 to 2.0.1

Bumps [karma-coverage](https://github.com/karma-runner/karma-coverage) from 1.1.2 to 2.0.1.
- [Release notes](https://github.com/karma-runner/karma-coverage/releases)
- [Changelog](https://github.com/karma-runner/karma-coverage/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma-coverage@v1.1.2...v2.0.1)

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

Author: dependabot-preview[bot]

package.json

@@ -87,7 +87,7 @@
     "karma-browserify": "^5.1.1",
     "karma-chrome-launcher": "^2.0.0",
     "karma-cli": "^1.0.1",
-    "karma-coverage": "^1.1.1",
+    "karma-coverage": "^2.0.1",
     "karma-jasmine": "^1.1.0",
     "karma-teamcity-reporter": "^1.0.0",
     "leaflet.pm": "^0.25.0",