Update dependency vue to v3

Author: renovate[bot]

package.json

@@ -18,7 +18,7 @@
     "luxon": "1.22.0",
     "marked": "0.8.0",
     "uuid": "3.4.0",
-    "vue": "2.6.11",
+    "vue": "3.2.47",
     "vue-class-component": "7.2.2",
     "vue-property-decorator": "8.3.0",
     "vue-router": "3.1.5",