Continuous Integration: python-version: ["3.9", "3.11", "3.13"]

Test on current versions of Python.
* https://devguide.python.org/versions

Author: cclauss

.github/workflows/continuous_integration.yml

@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - uses: actions/checkout@v4

tox.ini

@@ -6,6 +6,8 @@ python =
     3.9: py39
     3.10: py310
     3.11: py311
+    3.12: py312
+    3.13: py313
 
 [testenv]
 deps =