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 2.6.8 to 2.6.9
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.6.8...v2.6.9)

Updates `vue-template-compiler` from 2.6.8 to 2.6.9
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.6.8...v2.6.9)

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

package.json

@@ -20,7 +20,7 @@
     "nextcloud-password-confirmation": "^0.4.1",
     "nextcloud-server": "^0.15.9",
     "nextcloud-vue": "^0.9.1",
-    "vue": "^2.6.8",
+    "vue": "^2.6.9",
     "vuex": "^3.1.0"
   },
   "browserslist": [
@@ -55,7 +55,7 @@
     "url-loader": "^1.1.2",
     "vue-loader": "^15.7.0",
     "vue-server-renderer": "^2.6.9",
-    "vue-template-compiler": "^2.6.8",
+    "vue-template-compiler": "^2.6.9",
     "webpack": "^4.29.6",
     "webpack-cli": "^3.2.3",
     "webpack-merge": "^4.2.1",