feat: add Python 3.13 to test versions

Author: GeekMasher

.github/workflows/python.yml

@@ -16,7 +16,7 @@ on:
         description: 'Python versions to test against'
         type: string
         # All Major versions of Python that are currently supported
-        default: '3.9,3.10,3.11,3.12'
+        default: '3.9,3.10,3.11,3.12,3.13'
       vendor:
         description: 'Whether to vendor the dependencies'
         type: string