Bump vue-template-compiler and vue in /Rnwood.Smtp4dev/ClientApp

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

Updates `vue-template-compiler` from 2.6.11 to 2.6.12
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.6.11...v2.6.12)

Updates `vue` from 2.6.11 to 2.6.12
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.6.11...v2.6.12)

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

Rnwood.Smtp4dev/ClientApp/package.json

@@ -32,14 +32,14 @@
     "ts-debounce": "^1.0.0",
     "typescript": "~3.9.7",
     "vue-router": "^3.4.3",
-    "vue-template-compiler": "^2.6.10",
+    "vue-template-compiler": "^2.6.12",
     "vue2-ace-editor": "0.0.15",
     "@fortawesome/fontawesome-free": "^5.14.0",
     "core-js": "^3.6.5",
     "node-sass": "^4.14.1",
     "sass": "^1.26.10",
     "sass-loader": "^8.0.2",
-    "vue": "^2.6.10",
+    "vue": "^2.6.12",
     "vue-class-component": "^7.2.2",
     "vue-property-decorator": "^8.4.1"
   },