chore(package): update @vue/cli-plugin-unit-jest to version 4.3.0

Closes #112

Author: greenkeeper[bot]

package.json

@@ -48,7 +48,7 @@
     "@semantic-release/npm": "5.0.4",
     "@vue/cli-plugin-babel": "3.0.3",
     "@vue/cli-plugin-eslint": "3.0.0-beta.15",
-    "@vue/cli-plugin-unit-jest": "3.0.3",
+    "@vue/cli-plugin-unit-jest": "4.3.0",
     "@vue/cli-service": "3.0.3",
     "@vue/eslint-config-prettier": "3.0.0-rc.3",
     "@vue/test-utils": "1.0.0-beta.25",