chore: update vue-property-decorator version in template

fixes #6183

Author: haoqunjiang

packages/@vue/cli-plugin-typescript/package.json

@@ -54,6 +54,6 @@
     "jscodeshift": "^0.10.0",
     "typescript": "~3.9.3",
     "vue-class-component": "^7.2.3",
-    "vue-property-decorator": "^8.4.2"
+    "vue-property-decorator": "^9.1.2"
   }
 }