chore(deps): update docker/login-action digest to 56d703e

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -31,7 +31,7 @@ jobs:
       # https://github.com/docker/login-action
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@3da7dc6e2b31f99ef2cb9fb4c50fb0971e0d0139
+        uses: docker/login-action@56d703e106032867ad04c1e54d781c209f451e26
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}