Use git ls-remote to find latest tag

Author: rjeberhard

.github/workflows/publish-gh-pages.yml

@@ -52,7 +52,7 @@ jobs:
           
           cd $GITHUB_WORKSPACE/branch-4.0/documentation
           echo "Building documentation for latest minor version..."
-          latest_tag=$(git tag -l --sort=v:refname | grep v4.0 | tail -1 | cut -c2-)
+          latest_tag=$(git ls-remote https://github.com/oracle/weblogic-kubernetes-operator.git --h --sort origin "refs/tags/v*" | cut -f2 | grep v4.0 | tail -1 | cut -c12-)
           echo "Latest tag is $latest_tag..."
           echo $latest_tag >| $GITHUB_WORKSPACE/branch-4.0/documentation/site/layouts/shortcodes/latestVersion.html
           hugo -s site -d "$GITHUB_WORKSPACE/WORK" -b https://oracle.github.io/weblogic-kubernetes-operator