multimedia/x265: Refresh distfile

Footer in patch file now reports 2.45.0 instead of 2.42.0 which causes
a checksum mismatch

PR: 279017
PR: 279507
Reported by: makoto90@pm.me
Approved by: portmgr (blanket, build fix)

(cherry picked from commit eceefb231d28830d4ae927f722d6a8d650f5bd92)