Update docker/build-push-action action to v7

.gitea/workflows/docker-build.yml

@@ -11,13 +11,13 @@ jobs:
       - name: Check out repository code
         uses: actions/checkout@v6
       - name: Login to Docker Registry
-        uses: docker/login-action@v4
+        uses: docker/login-action@v3
         with:
           registry: gitea.henriburau.de
           username: ${{ gitea.actor }}
           password: ${{ secrets.REGISTRY_TOKEN}}
       - name: Build and push
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: build/Dockerfile