Renovate GitHub Actions and use cache

Author: akx

.github/workflows/publish.yml

@@ -10,8 +10,8 @@ jobs:
     runs-on: ubuntu-22.04
     name: Publish package on PyPI
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
         with:
           python-version: 3.7
       - run: pip install build setuptools wheel build setuptools_scm

.github/workflows/tests.yml

@@ -20,10 +20,14 @@ jobs:
           - os: windows-2019
     name: python${{ matrix.python }} on ${{ matrix.os }} ${{ matrix.variant }}
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}
+          cache: pip
+          cache-dependency-path: |
+            pyproject.toml
+            setup.py
       - name: Install test dependency
         run: pip install tox
       - name: Run tests