Add release for DGX Spark cuda121 (#1829)

* build for DGX Spark cuda121

* Apply suggestion from @matthewdouglas

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Co-authored-by: Matthew Douglas <38992547+matthewdouglas@users.noreply.github.com>

Author: mfuntowicz

.github/scripts/build-cuda.sh

@@ -15,7 +15,7 @@ elif [ "${build_arch}" = "aarch64" ]; then
     [[ "${cuda_version}" == 12.8.* || "${cuda_version}" == 12.9.* ]] && build_capability="75;80;90;100;120"
 
     # CUDA 13.0+: Add sm100/sm110/sm120
-    [[ "${cuda_version}" == 13.*.* ]] && build_capability="75;80;90;100;110;120"
+    [[ "${cuda_version}" == 13.*.* ]] && build_capability="75;80;90;100;110;120;121"
 else
     # By default, target Pascal through Hopper.
     build_capability="60;70;75;80;86;89;90"