Update docker/login-action digest to a979406

Author: renovate[bot]

.github/workflows/docker-image.yml

@@ -60,7 +60,7 @@ jobs:
 
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@40891eba8c2bcd1309b07ba8b11232f313e86779
+        uses: docker/login-action@a9794064588be971151ec5e7144cb535bcb56e36
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}