Update docker/login-action digest to a5609cb

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -54,7 +54,7 @@ jobs:
       # https://github.com/docker/login-action
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@28218f9b04b4f3f62068d7b6ce6ca5b26e35336c
+        uses: docker/login-action@a5609cb39f57be157c39b77359abfaa43aeaeb8f
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}