add pip cache

.github/workflows/test-models.yml

@@ -26,6 +26,14 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
     
+    - name: Setup pip cache
+      uses: actions/cache@v3
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -53,6 +61,14 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
+    - name: Setup pip cache
+      uses: actions/cache@v3
+      with:
+        path: ~/Library/Caches/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+    
     - name: Install dependencies
       run: |
         cd $GITHUB_WORKSPACE