Bump vue from 2.5.17 to 2.5.22

Bumps [vue](https://github.com/vuejs/vue) from 2.5.17 to 2.5.22.
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.5.17...v2.5.22)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -38,7 +38,7 @@
     "relative-date": "^1.1.3",
     "socket.io": "^2.2.0",
     "socket.io-client": "^2.2.0",
-    "vue": "2.5.17",
+    "vue": "2.5.22",
     "vueify": "^9.4.1",
     "watchify": "^3.11.0"
   },