Test Python 3.13 support

Author: ragibson

.github/workflows/python-package.yml

@@ -5,7 +5,7 @@ name: Python package
 
 on:
   push:
-    branches: [ master ]
+    branches: [ master, test-github-action ]
   pull_request:
     branches: [ master ]
 
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
+        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12", "3.13" ]
 
     steps:
       - uses: actions/checkout@v3