test on python 3.13

Author: keewis

.github/workflows/ci.yaml

@@ -47,7 +47,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        python-version: ["3.11", "3.12"]
+        python-version: ["3.11", "3.13"]
 
     steps:
       - uses: actions/checkout@v4