Simplify cache config

Author: hugovk

.github/workflows/lint.yml

@@ -9,4 +9,4 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
-      - uses: pre-commit/action@v2.0.2
+      - uses: pre-commit/action@v2.0.3

.github/workflows/test.yml

@@ -26,21 +26,8 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
-
-      - name: Get pip cache dir
-        id: pip-cache
-        run: |
-          echo "::set-output name=dir::$(pip cache dir)"
-
-      - name: Cache
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.pip-cache.outputs.dir }}
-          key:
-            ${{ matrix.os }}-${{ matrix.python-version }}-v1-${{
-            hashFiles('**/setup.py') }}
-          restore-keys: |
-            ${{ matrix.os }}-${{ matrix.python-version }}-v1-
+          cache: pip
+          cache-dependency-path: "setup.py"
 
       - name: Install dependencies
         run: |