devel/libhtp: Update to 0.5.25

• Remove CONFLICTS_INSTALL (libhtp-suricata port deleted)
• Remove unecessary PLIST_SUB
• Update and sort pkg-plist
• Bump security/suricata PORTREVISION, library name/version change

Changelog:

https://github.com/OISF/libhtp/blob/0.5.25/ChangeLog

PR: 220757
Submitted by: Franco Fichtner (franco opnsense org)