Use pip cache from setup-python

Author: kytta

.github/workflows/test.yml

@@ -61,20 +61,7 @@ jobs:
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-
-    - name: Get pip cache dir
-      id: pip-cache
-      run: |
-        echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-
-    - name: Cache
-      uses: actions/cache@v3
-      with:
-        path: ${{ steps.pip-cache.outputs.dir }}
-        key:
-          ${{ matrix.python-version }}-v1-${{ hashFiles('**/setup.cfg') }}-${{ hashFiles('**/tox.ini') }}
-        restore-keys: |
-          ${{ matrix.python-version }}-v1-
+        cache: pip
 
     - name: Install dependencies
       run: |