Do not upgrade automatically to the last version of Hugo: themes are not...

Do not upgrade automatically to the last version of Hugo: themes are not always compatible. This is the case here with Beautifulhugo

.gitlab-ci.yml

 # All available Hugo versions are listed here: https://gitlab.com/pages/hugo/container_registry
-image: registry.gitlab.com/pages/hugo:latest
+image: registry.gitlab.com/pages/hugo/hugo_extended:0.80.0
 
 variables:
   GIT_SUBMODULE_STRATEGY: recursive