ci: don't setup QEMU for amd64 platform

Author: x1unix

.github/workflows/release.yml

@@ -53,6 +53,7 @@ jobs:
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
       - name: Set up QEMU
+        if: ${{ matrix.platform != 'linux/amd64' }}
         uses: docker/setup-qemu-action@v1
       - name: Set up Docker Buildx
         if: ${{ matrix.platform != 'linux/amd64' }}