build(deps-dev): bump vue-template-compiler from 2.6.7 to 2.6.8

Bumps [vue-template-compiler](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>

Author: dependabot-support

yarn.lock

@@ -7334,9 +7334,9 @@ verror@1.10.0:
     extsprintf "^1.2.0"
 
 vue-template-compiler@^2.5.21:
-  version "2.6.7"
-  resolved "https://registry.yarnpkg.com/vue-template-compiler/-/vue-template-compiler-2.6.7.tgz#7f6c14eacf3c912d28d33b029cde706d9756e00c"
-  integrity sha512-ZjxJLr6Lw2gj6aQGKwBWTxVNNd28/qggIdwvr5ushrUHUvqgbHD0xusOVP2yRxT4pX3wRIJ2LfxjgFT41dEtoQ==
+  version "2.6.8"
+  resolved "https://registry.yarnpkg.com/vue-template-compiler/-/vue-template-compiler-2.6.8.tgz#750802604595134775b9c53141b9850b35255e1c"
+  integrity sha512-SwWKANE5ee+oJg+dEJmsdxsxWYICPsNwk68+1AFjOS8l0O/Yz2845afuJtFqf3UjS/vXG7ECsPeHHEAD65Cjng==
   dependencies:
     de-indent "^1.0.2"
     he "^1.1.0"