try change torch version

.github/workflows/integration-test.yml

@@ -29,15 +29,15 @@ jobs:
           ~/.nn_meter
           /home/runner/work/nn-Meter/data/testmodels
           /opt/hostedtoolcache/Python/3.6.10/x64/lib/python3.6/site-packages
-        key: ${{hashFiles('nn_meter/configs/predictors.yaml')}}-${{hashFiles('tests/integration_test.py')}}
+        key: Data-${{hashFiles('nn_meter/configs/predictors.yaml')}}-${{hashFiles('tests/integration_test.py')}}
 
     - name: Install dependencies
       if: steps.cache.outputs.cache-hit != 'true'
       run: |
         pip install tensorflow==1.15.0
         pip install onnx==1.9.0
-        pip install torch==1.7.1
-        pip install torchvision==0.8.2
+        pip install torch==1.9.0
+        pip install torchvision==0.10.0
         pip install onnx-simplifier
         
     - name: Install nn-Meter

.github/workflows/integration-test_nni_based_torch.yml

@@ -29,15 +29,15 @@ jobs:
           ~/.nn_meter
           /home/runner/work/nn-Meter/data/testmodels
           /opt/hostedtoolcache/Python/3.6.10/x64/lib/python3.6/site-packages
-        key: ${{hashFiles('nn_meter/configs/predictors.yaml')}}-${{hashFiles('tests/integration_test.py')}}
+        key: Data-${{hashFiles('nn_meter/configs/predictors.yaml')}}-${{hashFiles('tests/integration_test.py')}}
 
     - name: Install dependencies
       if: steps.cache.outputs.cache-hit != 'true'
       run: |
         pip install tensorflow==1.15.0
         pip install onnx==1.9.0
-        pip install torch==1.7.1
-        pip install torchvision==0.8.2
+        pip install torch==1.9.0
+        pip install torchvision==0.10.0
         pip install onnx-simplifier
     
     - name: Install nni

.github/workflows/integration-test_onnx_based_torch.yml

@@ -29,15 +29,15 @@ jobs:
           ~/.nn_meter
           /home/runner/work/nn-Meter/data/testmodels
           /opt/hostedtoolcache/Python/3.6.10/x64/lib/python3.6/site-packages
-        key: ${{hashFiles('nn_meter/configs/predictors.yaml')}}-${{hashFiles('tests/integration_test.py')}}
+        key: Data-${{hashFiles('nn_meter/configs/predictors.yaml')}}-${{hashFiles('tests/integration_test.py')}}
 
     - name: Install dependencies
       if: steps.cache.outputs.cache-hit != 'true'
       run: |
         pip install tensorflow==1.15.0
         pip install onnx==1.9.0
-        pip install torch==1.7.1
-        pip install torchvision==0.8.2
+        pip install torch==1.9.0
+        pip install torchvision==0.10.0
         pip install onnx-simplifier
         
     - name: Install nn-Meter