Bump vue and vue-template-compiler

Bumps [vue](https://github.com/vuejs/vue) and [vue-template-compiler](https://github.com/vuejs/vue). These dependencies needed to be updated together.

Updates `vue` from 2.6.10 to 2.6.11
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.6.10...v2.6.11)

Updates `vue-template-compiler` from 2.6.10 to 2.6.11
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.6.10...v2.6.11)

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

package.json

@@ -11,7 +11,7 @@
     "bootstrap-vue": "^2.2.2",
     "core-js": "^3.4.8",
     "firebase": "^7.7.0",
-    "vue": "^2.6.10",
+    "vue": "^2.6.11",
     "vue-chat-scroll": "^1.3.6",
     "vue-router": "^3.1.5"
   },
@@ -31,7 +31,7 @@
     "portal-vue": "^2.1.4",
     "sass-loader": "^7.1.0",
     "vue-cli-plugin-bootstrap-vue": "^0.5.0",
-    "vue-template-compiler": "^2.6.10"
+    "vue-template-compiler": "^2.6.11"
   },
   "eslintConfig": {
     "root": true,