Update kernel to tip of 'cos/main-R109-cos-6.1' BUG=b/424527079 TEST=presubmit RELEASE_NOTE=Updated the Linux kernel to v6.1.141. This includes mitigations for CVE-2024-28956, which may negatively impact the performance of Intel machine types. Change-Id: Ia7bf34f1ba29a2b15f7b44d39e12da6bdc10194f