feat(release): make the QEMU binfmt image an input

The default stays qemu-v8.1.5. A caller whose arm64 build crashes under that version can pass another image.

.github/workflows/go-release.yaml

@@ -18,6 +18,11 @@ on:
         required: false
         type: boolean
         default: false
+      qemu-image:
+        description: "binfmt image that registers QEMU for multi-arch Docker builds"
+        required: false
+        type: string
+        default: "tonistiigi/binfmt:qemu-v8.1.5"
       docker-registry:
         description: "Docker registry to push to"
         required: false
@@ -183,7 +188,7 @@ jobs:
         if: inputs.docker-enabled
         uses: docker/setup-qemu-action@v4
         with:
-          image: tonistiigi/binfmt:qemu-v8.1.5
+          image: ${{ inputs.qemu-image }}
 
       - name: Set up Docker Buildx
         if: inputs.docker-enabled