Add most recent python versions to test matrix

Author: Crozzers

.github/workflows/tests.yaml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "pypy3.9"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "pypy3.9"]
         os:
           - ubuntu-latest
           - windows-latest