Enable Python 3.13 tests.

Author: Jan-Willem

.github/workflows/python-testing-linux.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.9","3.10","3.11","3.12"]
+        python-version: ["3.9","3.10","3.11","3.12","3.13"]
     steps:
     - uses: actions/checkout@v4
 

.github/workflows/python-testing-macos.yml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["macos-latest"]
-        python-version: ["3.9", "3.10","3.11","3.12"]
+        python-version: ["3.9", "3.10","3.11","3.12","3.13"]
     steps:
       - name: Setup Conda
         uses: conda-incubator/setup-miniconda@v3