Added Py 3.13

Author: shner-elmo

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest] #windows-latest
-        python-version: ['3.9', '3.10', '3.11', '3.12'] # '3.13-dev'
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
     - uses: actions/checkout@v4