Update docker/login-action digest to af1e73f (#324)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/promote.yml

@@ -32,7 +32,7 @@ jobs:
         run: git fetch --prune --unshallow
 
       - name: Login to Docker
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4
+        uses: docker/login-action@af1e73f918a031802d376d3c8bbc3fe56130a9b0 # v4
         if: env.DOCKER_USR != ''
         with:
           username: ${{ secrets.DOCKER_USR }}