Bump vue-router to 3.5.3

Signed-off-by: Jeremy Ho <jujaga@gmail.com>

Author: jujaga

app/frontend/package-lock.json

@@ -39,7 +39,7 @@
     "vue-clipboard2": "^0.3.3",
     "vue-formio": "^4.0.7",
     "vue-json-pretty": "^1.8.1",
-    "vue-router": "3.5.1",
+    "vue-router": "^3.5.3",
     "vuetify": "^2.5.8",
     "vuex": "^3.6.0",
     "vuex-map-fields": "^1.4.1"