Using action setup-python maintained by https://github.com/ytdl-org/ …

…that works with older pythons

.github/workflows/run-tests.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         include:
-          - { os: ubuntu-latest, python_version: '2.7' }
+          - { os: ubuntu-20.04, python_version: '3.4' }
           - { os: ubuntu-20.04, python_version: '3.5' }
           - { os: ubuntu-20.04, python_version: '3.6' }
           - { os: ubuntu-20.04, python_version: '3.7' }
@@ -54,7 +54,7 @@ jobs:
       run: python -m pip install -r requirements-dev.txt -r requirements.txt
     - name: Check Types
       run: ./scripts/check-types
-      if: matrix.python_version != '2.7'
+      if: matrix.python-version != '2.7'
     - name: Run tests
       run: python -m pytest
   sdist:
@@ -66,9 +66,9 @@ jobs:
         python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python_version }}
-      uses: andreafrancia/setup-python@v1
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
       with:
-        python-version: ${{ matrix.python_version }}
+        python-version: ${{ matrix.python-version }}
     - name: Test sdist
       run: scripts/test-sdist