Set latesttag on upgrades catalog

Author: dprince

.github/workflows/catalog-openstack-operator-upgrades.yaml

@@ -40,6 +40,15 @@ jobs:
       with:
         path: ./openstack-operator
 
+    - name: Get branch name
+      id: branch-name
+      uses: tj-actions/branch-names@v7
+
+    - name: Set latest tag for non main branch
+      if: "${{ steps.branch-name.outputs.current_branch != 'main' }}"
+      run: |
+        echo "latesttag=${{ steps.branch-name.outputs.current_branch }}-latest" >> $GITHUB_ENV
+
     - name: Install opm
       uses: redhat-actions/openshift-tools-installer@v1
       with: