CI: test on newer versions of Python too

Signed-off-by: Aarni Koskela <[email protected]>

.github/workflows/tox.yml

@@ -6,17 +6,27 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        python: [3.7, 3.8, 3.9]
+        python: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
+          cache: pip
+          cache-dependency-path: |
+            tox.ini
+            setup.py
       - run: pip install tox
       - if: matrix.python == '3.7'
         run: TOXENV=py37 tox
       - if: matrix.python == '3.8'
         run: TOXENV=py38 tox
       - if: matrix.python == '3.9'
         run: TOXENV=py39 tox
+      - if: matrix.python == '3.10'
+        run: TOXENV=py310 tox
+      - if: matrix.python == '3.11'
+        run: TOXENV=py311 tox
+      - if: matrix.python == '3.12'
+        run: TOXENV=py312 tox

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{37,38,39}
+envlist = py{37,38,39,310,311,312}
 
 [testenv]
 whitelist_externals = echo make