Bump karma-coverage from 1.1.2 to 2.0.3

Bumps [karma-coverage](https://github.com/karma-runner/karma-coverage) from 1.1.2 to 2.0.3.
- [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...v2.0.3)

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

package.json

@@ -13,7 +13,7 @@
     "jasmine": "^3.4.0",
     "karma": "^4.1.0",
     "karma-chrome-launcher": "^3.1.0",
-    "karma-coverage": "^1.1.2",
+    "karma-coverage": "^2.0.3",
     "karma-jasmine": "^2.0.1",
     "karma-rollup-preprocessor": "^7.0.0",
     "rollup": "^1.12.2",