don't cache pip dependencies

.github/workflows/tests.yml

@@ -61,7 +61,7 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: "3.10"
-          cache: 'pip' # caching pip dependencies
+#          cache: 'pip' # caching pip dependencies
 
       - name: Install dependencies
         run: |