Advance Kernel to Build: 12513677 (6.1) in trunk_staging Panther and Cheetah

Ignore-AOSP-First: in topic with internal-first/internal-only projects
Change-Id: Ie6e46e4ccd419a5b8409f513ee62538d2d21207d
Signed-off-by: SecurityBot <android-nexus-securitybot@system.gserviceaccount.com>