chore(dependencies): update docker/login-action commit hash to b776a64

Author: renovate-bot

.github/workflows/docker.yml

@@ -18,7 +18,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Log in to the Container registry
-        uses: docker/login-action@1cce1654e01caa87cc0eac1c100e6749708affb9
+        uses: docker/login-action@b776a64ec09518510ac69152813c11f36ace77a1
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}