Update deploy.yaml

.github/workflows/deploy.yaml

@@ -32,10 +32,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-pip-
 
+      - name: Clear pip cache
+        run: |
+          pip cache purge
+
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
+          pip install --no-cache-dir -r requirements.txt
 
       - name: Test with Pytest
         run: |