Update docker/login-action digest to ef38ec3

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@3d100841f68d4548bf57e52eb27bd33ec5069f55
+        uses: docker/login-action@ef38ec311a7df3f01475313e7c5bb584b74b112a
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}