multimedia/x265: Refresh distfile

Footer in patch file x265-asm-warnings.patch now reports 2.46.1 instead
of 2.46.0 which causes a checksum mismatch

PR: 281550
Approved by: Mikhail T. <freebsd-2024@virtual-estates.net> (maintainer)
MFH: 2024Q3

(cherry picked from commit 3263e3ca8f70c2051a713742b9f0bd727529d562)