Use an aarch64 hugo container

Gitlab runners are on arm hosts.  Need to use an arm64 container.

.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: hub.docker.com/m5p3nc3r/hugo:latest
 
 variables:
   GIT_SUBMODULE_STRATEGY: recursive