修复测试脚本的环境设置

tests/scripts/task_unit_test.sh

@@ -22,6 +22,7 @@ export DGL_LIBRARY_PATH=${PWD}/build
 export PYTHONPATH=tests:${PWD}/python:$PYTHONPATH
 export DGL_DOWNLOAD_DIR=${PWD}
 export TF_FORCE_GPU_ALLOW_GROWTH=true
+export LD_LIBRARY_PATH=/usr/local/lib/python3.8/site-packages/torch/lib/:$LD_LIBRARY_PATH
 unset TORCH_ALLOW_TF32_CUBLAS_OVERRIDE
 
 if [ $2 == "gpu" ] 
@@ -33,7 +34,7 @@ fi
 
 conda activate ${DGLBACKEND}-ci
 
-python3 -m pip install pytest psutil pyyaml pydantic pandas rdflib ogb || fail "pip install"
+python3 -m pip install pytest psutil pyyaml pydantic pandas rdflib ogb urllib3==1.26.15 || fail "pip install"
 if [ $DGLBACKEND == "mxnet" ]
 then
   python3 -m pytest -v --junitxml=pytest_compute.xml --durations=100 --ignore=tests/compute/test_ffi.py tests/compute || fail "compute"