CI: mention temporary qemu version pin

.github/workflows/docker-aio.yml

@@ -53,6 +53,9 @@ jobs:
         uses: docker/setup-qemu-action@v3
         with:
           image: tonistiigi/binfmt:qemu-v9.2.0
+#
+# TODO: unpin qemu version after default is updated
+#
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3