[pan-gp] Update latest for 6.0 (#8328)

See https://docs.paloaltonetworks.com/globalprotect/6-0/globalprotect-app-release-notes/globalprotect-addressed-issues.

Author: mrjcap

products/pan-gp.md

@@ -57,8 +57,8 @@ releases:
     releaseDate: 2022-02-22
     eol: 2025-12-31
     eoas: 2025-12-31
-    latest: "6.0.11"
-    latestReleaseDate: 2024-11-25
+    latest: "6.0.12"
+    latestReleaseDate: 2025-09-02
     link: https://docs.paloaltonetworks.com/globalprotect/6-0/globalprotect-app-release-notes/globalprotect-addressed-issues
 
   - releaseCycle: "5.3"