Update TheRock SHA on single node RCCL tests (#4378)

This PR aims to update TheRock SHA for single node rccl unit tests

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Co-authored-by: Aravind Ravikumar <arravikum@amd.com>

Author: araravik-psd

.github/workflows/therock-rccl-test-packages-single-node.yml

@@ -55,7 +55,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           repository: "ROCm/TheRock"
-          ref: 5523139d860b6430aa24baf044e6dfa59921df60 # 02/11/2026 commit
+          ref: 9a38f01d34a90ecabd87d6cdf197466eab4e84ab # 2026-03-20
 
       - name: Run setup test environment workflow
         uses: './.github/actions/setup_test_environment'