devel/jenkins-lts: Update to 2.541.3
Security fix for CVE-2026-33001 and CVE-2026-33002.
Security: 970fd0ec-26f5-11f1-a9b1-0cc47ada5f32
MFC: 2026Q1
Sponsored by: The FreeBSD Foundation
(cherry picked from commit c92326ef5d2595885fcd9446d4883575c4ecb534)