Merge pull request #584 from jakob-keller/ci-python-3.15

ci(python): include Python 3.15 in test matrix

Author: jakob-keller

.github/workflows/test.yml

@@ -27,6 +27,7 @@ jobs:
           - 3.12
           - 3.13
           - 3.14
+          - 3.15
     env:
       OS: ${{ matrix.os }}
       PYTHON: ${{ matrix.python-version }}