fix(deps): update dependency karma-electron to v6.1.1

Author: renovate-bot

package-lock.json

@@ -19,7 +19,7 @@
     "karma": "2.0.2",
     "karma-chrome-launcher": "2.2.0",
     "karma-edge-launcher": "0.4.2",
-    "karma-electron": "6.0.0",
+    "karma-electron": "6.1.1",
     "karma-firefox-launcher": "1.1.0",
     "karma-safari-launcher": "1.0.0",
     "lit-html": "0.9.0",