fix publish helm github action

Author: notandy

.github/workflows/publish-helm.yml

@@ -37,4 +37,4 @@ jobs:
         run: |
           CHART_NAME=openstack-hypervisor-operator
           CHART_VERSION=$(grep "version:" ./charts/${CHART_NAME}/Chart.yaml | awk '{print $2}')
-          helm push "${CHART_NAME}-${CHART_VERSION}tgz" "oci://ghcr.io/${{ github.repository_owner }}"
+          helm push "${CHART_NAME}-${CHART_VERSION}.tgz" "oci://ghcr.io/${{ github.repository_owner }}"