Update Python versions in unit_source.yml (#196)

Removed duplicate Python version entries for 'devel' and added new versions.

Author: mjohns91

.github/workflows/unit_source.yml

@@ -21,10 +21,18 @@ on:
         # https://docs.ansible.com/ansible/devel/roadmap/ROADMAP_2_20.html
         default: >-
           [
+            {
+              "ansible-version": "devel",
+              "python-version": "3.10"
+            },
             {
               "ansible-version": "devel",
               "python-version": "3.11"
             },
+            {
+              "ansible-version": "devel",
+              "python-version": "3.12"
+            },
             {
               "ansible-version": "devel",
               "python-version": "3.14"
@@ -37,10 +45,6 @@ on:
               "ansible-version": "stable-2.20",
               "python-version": "3.14"
             },
-            {
-              "ansible-version": "devel",
-              "python-version": "3.10"
-            },
             {
               "ansible-version": "milestone",
               "python-version": "3.11"