chore(deps): update dependency @vue/test-utils to v2

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
         "@vue/cli-plugin-typescript": "^4.3.1",
         "@vue/cli-plugin-unit-jest": "^4.3.1",
         "@vue/cli-service": "^4.3.1",
-        "@vue/test-utils": "1.2.2",
+        "@vue/test-utils": "2.4.2",
         "babel-core": "7.0.0-bridge.0",
         "codecov": "^3.6.5",
         "cross-env": "^7.0.2",