Bump vue-router from 3.4.3 to 3.4.9

Bumps [vue-router](https://github.com/vuejs/vue-router) from 3.4.3 to 3.4.9.
- [Release notes](https://github.com/vuejs/vue-router/releases)
- [Changelog](https://github.com/vuejs/vue-router/blob/dev/CHANGELOG.md)
- [Commits](vuejs/vue-router@v3.4.3...v3.4.9)

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

Author: dependabot[bot]

package-lock.json

@@ -82,7 +82,7 @@
     "vue-localstorage": "^0.6.2",
     "vue-material-design-icons": "^4.9.0",
     "vue-multiselect": "^2.1.6",
-    "vue-router": "^3.4.3",
+    "vue-router": "^3.4.9",
     "vuedraggable": "^2.24.1",
     "vuex": "^3.5.1",
     "vuex-router-sync": "^5.0.0"