chore(deps): update dependency vue-jest to v3 (#3)

Author: renovate[bot]

package.json

@@ -91,7 +91,7 @@
     "jest-serializer-vue": "^2.0.2",
     "jsdom": "latest",
     "standard-version": "latest",
-    "vue-jest": "^2.6.0",
+    "vue-jest": "^3.0.0",
     "vue-loader": "^15.4.2",
     "vue-router": "^3.0.1",
     "vue-server-renderer": "^2.5.17-beta.0",