Fix clang job using REDHAT_USER secret

Author: bthomee

.github/workflows/rhel.yml

@@ -66,7 +66,7 @@ jobs:
       - name: Login to GitHub Registry
         run: echo '${{ secrets.GITHUB_TOKEN }}' | docker login ${CONTAINER_REGISTRY} -u '${{ github.repository_owner }}' --password-stdin
       - name: Login to Red Hat Registry
-        run: echo '${{ secrets.REDHAT_TOKEN }}' | docker login ${REDHAT_REGISTRY} -u '${{ env.REDHAT_USER }}' --password-stdin
+        run: echo '${{ secrets.REDHAT_TOKEN }}' | docker login ${REDHAT_REGISTRY} -u '${{ secrets.REDHAT_USER }}' --password-stdin
       - name: Determine the Docker image name.
         run: |
           # Convert the repository name to lowercase as the organization name is