build: use chrome for e2e tests

There's a known issue with Electron in this version of cypress that
leads to a memory leak and therefore a test run crash. Look at this GH
issue for more: cypress-io/cypress#7204.

Author: luqven

package.json

@@ -30,7 +30,7 @@
     "build:test-app": "vue-cli-service build",
     "test": "run-s test:unit test:e2e",
     "test:unit": "vue-cli-service test:unit",
-    "test:e2e": "vue-cli-service test:e2e",
+    "test:e2e": "vue-cli-service test:e2e --browser chrome",
     "lint": "vue-cli-service lint",
     "lint:ci": "vue-cli-service lint --no-fix --max-warnings 0",
     "prepublishOnly": "run-s build",