Update action.yml

Author: zxd1997066

.github/actions/linux-uttest/action.yml

@@ -157,6 +157,7 @@ runs:
         export CCL_ROOT=$(dirname $(which python))/../
         export PATH="${CCL_ROOT}/bin/libfabric:${PATH}"
         export LD_LIBRARY_PATH="${CCL_ROOT}/lib:${LD_LIBRARY_PATH}"
+        export TEMP_DIR=/tmp
         python run_distributed_local.py \
           2> ${{ github.workspace }}/ut_log/xpu_distributed/xpu_distributed_test_error.log | \
           tee ${{ github.workspace }}/ut_log/xpu_distributed/xpu_distributed_test.log