chore(deps-dev): bump karma-mocha from 1.3.0 to 2.0.0 (#135)

Author: dependabot-preview[bot]

package-lock.json

@@ -49,7 +49,7 @@
     "karma-cli": "^2.0.0",
     "karma-coverage-istanbul-reporter": "^2.0.5",
     "karma-firefox-launcher": "^1.3.0",
-    "karma-mocha": "^1.3.0",
+    "karma-mocha": "^2.0.0",
     "karma-sinon-chai": "^2.0.2",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^4.0.2",