Update test_and_merge.yml

Author: baseplate-admin

.github/workflows/test_and_merge.yml

@@ -28,6 +28,8 @@ jobs:
                       django-version: '<3.2'
                     - python-version: '3.12'
                       django-version: '<3.3'
+                    - python-version: '3.13'
+                      django-version: '<3.3'
 
         steps:
             - uses: actions/checkout@v3