Bump vue from 2.6.7 to 2.6.8

Bumps [vue](https://github.com/vuejs/vue) from 2.6.7 to 2.6.8.
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](vuejs/vue@v2.6.7...v2.6.8)

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

yarn.lock

@@ -4776,9 +4776,9 @@ validate-npm-package-name@^3.0.0:
     builtins "^1.0.3"
 
 vue@^2.5.21:
-  version "2.6.7"
-  resolved "https://registry.yarnpkg.com/vue/-/vue-2.6.7.tgz#254f188e7621d2d19ee28d0c0442c6d21b53ae2d"
-  integrity sha512-g7ADfQ82QU+j6F/bVDioVQf2ccIMYLuR4E8ev+RsDBlmwRkhGO3HhgF4PF9vpwjdPpxyb1zzLur2nQ2oIMAMEg==
+  version "2.6.8"
+  resolved "https://registry.yarnpkg.com/vue/-/vue-2.6.8.tgz#f21cbc536bfc14f7d1d792a137bb12f69e60ea91"
+  integrity sha512-+vp9lEC2Kt3yom673pzg1J7T1NVGuGzO9j8Wxno+rQN2WYVBX2pyo/RGQ3fXCLh2Pk76Skw/laAPCuBuEQ4diw==
 
 wcwidth@^1.0.1:
   version "1.0.1"