Update docker/login-action action to v4

.gitea/workflows/build.yaml

@@ -18,7 +18,7 @@ jobs:
 
       - name: Login to Container Registry
         if: ${{ gitea.event_name != 'pull_request' }}
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: docker.valverde.cloud
           username: ${{ secrets.DOCKER_REGISTRY_USERNAME }}
@@ -39,7 +39,7 @@ jobs:
             latest=true
 
       - name: Build
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile