Use setup-python v4 pip caching feature

Author: rffontenelle

.github/workflows/test.yml

@@ -23,15 +23,8 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: 3.9
-
-      - name: pip cache
-        uses: actions/cache@v3
-        with:
-          path: ~/.cache/pip
-          key:
-            ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('**/requirements.txt') }}-${{ hashFiles('noxfile.py') }}
-          restore-keys: |
-            ${{ matrix.os }}-${{ matrix.python-version }}-
+          cache: 'pip'
+          cache-dependency-path: 'requirements.txt'
 
       - name: Install dependencies
         run: |