ci/cd: fix build

Author: kmendell

.github/workflows/build-release.yml

@@ -128,7 +128,7 @@ jobs:
             ./cmd/agent
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ env.BINARY_NAME }}-${{ matrix.platform }}
           path: bin/${{ env.BINARY_NAME }}-${{ matrix.platform }}${{ matrix.extension }}
@@ -146,12 +146,12 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Log in to Docker Hub
-        if: github.event_name != 'pull_request'
+      - name: Log in to GitHub Container Registry
         uses: docker/login-action@v3
         with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract metadata
         id: meta
@@ -168,7 +168,7 @@ jobs:
             type=sha
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64