Update macOS version number to 15.4 (#27721)

Co-authored-by: allenhouchins <[email protected]>

Author: allenhouchins

it-and-security/lib/macos/policies/latest-macos.yml

@@ -1,5 +1,5 @@
 - name: macOS - Operating system up to date
-  query: SELECT 1 FROM os_version WHERE version >= '15.3.2';
+  query: SELECT 1 FROM os_version WHERE version >= '15.4';
   critical: true
   description: Using an outdated macOS version risks exposure to security vulnerabilities and potential system instability.
   resolution: Please find time to run Software Update.  > System Settings > Software Update