sysutils/logstash92: Update 9.2.3 => 9.2.6

Release Notes:
https://www.elastic.co/docs/release-notes/logstash#logstash-9.2.6-release-notes

Improve port:

• Replace PORTVERSION with DISTVERSION.
• Add LOCAL/vvd/elastic to MASTER_SITES for those who can't download due to the HTTP error "Forbidden 403".
• Sort USES.
• Adjust JAVA_VERSION to supported LTS 25, 21 and 17.
• Parametrize "logstash" with "${PORTNAME}".
• Adjust CONFLICTS.
• Fix warnings from portclippy.
• Add possibility to use custom user/group.
• Replace RM of bundled JDK and *.bat files with EXTRACT_AFTER_ARGS=--exclude.
• Merge CHMODs.
• Replace %%PREFIX%% with %%LOCALBASE%% in rc.d script - bash installed in LOCALBASE.

PR: 293788
Approved by: elastic (maintainer, implicit - inactive for more than 6 months)
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>