[pan-os] Update latest for 11.2 (#8502)

See https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-9-known-and-addressed-issues/pan-os-11-2-9-addressed-issues.

Author: mrjcap

products/pan-os.md

@@ -39,9 +39,9 @@ releases:
   - releaseCycle: "11.2"
     releaseDate: 2024-05-02
     eol: 2027-05-02
-    latest: "11.2.8"
-    latestReleaseDate: 2025-08-21
-    link: https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-8-known-and-addressed-issues/pan-os-11-2-8-addressed-issues
+    latest: "11.2.9"
+    latestReleaseDate: 2025-09-18
+    link: https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-9-known-and-addressed-issues/pan-os-11-2-9-addressed-issues
 
   - releaseCycle: "11.1"
     releaseDate: 2023-11-03