Add arm64 builds to the libcuvs_c rocky8 matrix

Author: robertmaynard

.github/workflows/pr.yaml

@@ -184,9 +184,12 @@ jobs:
         cuda_version:
           - &latest_cuda12 '12.9.1'
           - &latest_cuda13 '13.0.2'
+        arch:
+          - amd64
+          - arm64
     with:
       build_type: pull-request
-      arch: "amd64"
+      arch: "{{matrix.arch}}"
       date: ${{ inputs.date }}_c
       container_image: "rapidsai/ci-wheel:26.02-cuda${{ matrix.cuda_version }}-rockylinux8-py3.10"
       node_type: "cpu16"
@@ -206,10 +209,13 @@ jobs:
         cuda_version:
           - *latest_cuda12
           - *latest_cuda13
+        arch:
+          - amd64
+          - arm64
     with:
       build_type: pull-request
       node_type: "gpu-l4-latest-1"
-      arch: "amd64"
+      arch: "{{matrix.arch}}"
       date: ${{ inputs.date }}_c
       container_image: "rapidsai/ci-wheel:26.02-cuda${{ matrix.cuda_version }}-rockylinux8-py3.10"
       script: "ci/test_standalone_c.sh"