sysutils/logstash8: update to 8.4.3

ChangeLog at:	https://www.elastic.co/guide/en/logstash/8.4/releasenotes.html

sysutils/logstash8/Makefile

 PORTNAME=	logstash
-PORTVERSION=	8.4.1
+PORTVERSION=	8.4.3
 DISTVERSIONSUFFIX=	-darwin-x86_64
 CATEGORIES=	sysutils java
 MASTER_SITES=	https://artifacts.elastic.co/downloads/logstash/

sysutils/logstash8/distinfo

-TIMESTAMP = 1662857451
-SHA256 (logstash-8.4.1-darwin-x86_64.tar.gz) = 30691b89a014451fbd8bc0735716e5826d56ef549ab1fc2b7e1b1b8097b16f13
-SIZE (logstash-8.4.1-darwin-x86_64.tar.gz) = 327204972
+TIMESTAMP = 1667021643
+SHA256 (logstash-8.4.3-darwin-x86_64.tar.gz) = 26e33334840f1fcb108247ff613d0c2d6384e82c61a76b0de47bb560fa877357
+SIZE (logstash-8.4.3-darwin-x86_64.tar.gz) = 327228472