Bump vue-router from 3.4.9 to 3.5.1 in /frontend

Bumps [vue-router](https://github.com/vuejs/vue-router) from 3.4.9 to 3.5.1.
- [Release notes](https://github.com/vuejs/vue-router/releases)
- [Changelog](https://github.com/vuejs/vue-router/blob/dev/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue-router/compare/v3.4.9...v3.5.1)

---
updated-dependencies:
- dependency-name: vue-router
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

frontend/package.json

@@ -15,7 +15,7 @@
     "vue": "^2.6.14",
     "vue-clipboard2": "^0.3.1",
     "vue-i18n": "^8.24.4",
-    "vue-router": "^3.2.0",
+    "vue-router": "^3.5.1",
     "vue-socket.io": "^3.0.10"
   },
   "devDependencies": {

frontend/yarn.lock

@@ -8819,10 +8819,10 @@ vue-loader@^15.9.2:
     vue-hot-reload-api "^2.3.0"
     vue-style-loader "^4.1.0"
 
-vue-router@^3.2.0:
-  version "3.4.9"
-  resolved "https://registry.npm.taobao.org/vue-router/download/vue-router-3.4.9.tgz?cache=0&sync_timestamp=1606723745188&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fvue-router%2Fdownload%2Fvue-router-3.4.9.tgz#c016f42030ae2932f14e4748b39a1d9a0e250e66"
-  integrity sha1-wBb0IDCuKTLxTkdIs5odmg4lDmY=
+vue-router@^3.5.1:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/vue-router/-/vue-router-3.5.1.tgz#edf3cf4907952d1e0583e079237220c5ff6eb6c9"
+  integrity sha512-RRQNLT8Mzr8z7eL4p7BtKvRaTSGdCbTy2+Mm5HTJvLGYSSeG9gDzNasJPP/yOYKLy+/cLG/ftrqq5fvkFwBJEw==
 
 vue-socket.io@^3.0.10:
   version "3.0.10"