cron: adjust deprecated version (#52531)

* add changelog fragment

* fixed freudian slip in changelog

changelogs/fragments/52322-cron_fix_missing_deprecation_warn.yaml

@@ -0,0 +1,2 @@
+minor_changes:
+- "Added missing deprecation warning for param 'reboot' and use without param 'name' to the cron module."

lib/ansible/modules/system/cron.py

@@ -613,12 +613,12 @@ def main():
     if not name:
         module.deprecate(
             msg="The 'name' parameter will be required in future releases.",
-            version='2.10'
+            version='2.12'
         )
     if reboot:
         module.deprecate(
             msg="The 'reboot' parameter will be removed in future releases. Use 'special_time' option instead.",
-            version='2.10'
+            version='2.12'
         )
 
     if module._diff: