Review: Test on the current versions of CPython

https://devguide.python.org/versions/

.github/workflows/review.yml

@@ -5,17 +5,17 @@ on: [push, pull_request]
 jobs:
   review:
     name: Run linters and tests
-    runs-on: "ubuntu-20.04"
+    runs-on: "ubuntu-latest"
     strategy:
       matrix:
-        python: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+        python: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - name: Checkout the source code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set the python version
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
 
@@ -25,23 +25,17 @@ jobs:
           python-version: ${{ matrix.python }}
 
       - name: Run tests
-
-        # Python 3.6 tests have been removed since swagger-spec-validator no longer supports it.
-        # A successful workflow run for Python 3.6 is required by the GitHub branch protection rules.
-        if: ${{ matrix.python != 3.6 }}
-
         env:
           PYTHON_VERSION: ${{ matrix.python }}
         run: tox -e $(tox -l | grep py${PYTHON_VERSION//.} | paste -sd "," -)
 
       - name: Report coverage
-        if: ${{ matrix.python == 3.9 }}
         run: |
           pip install coverage
           coverage report
 
       - name: Check for incompatibilities with publishing to PyPi
-        if: ${{ matrix.python == 3.8 }}
+        if: ${{ matrix.python == 3.11 }}
         run: |
           pip install -r requirements/publish.txt
           python setup.py sdist