Update docker/setup-buildx-action action to v4

.gitea/workflows/build.yaml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       - name: Checkout
         uses: actions/checkout@v6
@@ -26,7 +26,7 @@ jobs:
 
       - name: Generate Docker metadata
         id: meta
-        uses: docker/metadata-action@v6
+        uses: docker/metadata-action@v5
         with:
           images: |
             docker.valverde.cloud/${{ gitea.repository }}