deskutils/fet: Update to 6.28.3

Changelog: https://lalescu.ro/liviu/fet/news.html

deskutils/fet/Makefile

 PORTNAME=	fet
-DISTVERSION=	6.28.2
+DISTVERSION=	6.28.3
 CATEGORIES=	deskutils education
 MASTER_SITES=	https://lalescu.ro/liviu/fet/download/ \
 		https://lalescu.ro/liviu/fet/download/old/ \

deskutils/fet/distinfo

-TIMESTAMP = 1732894094
-SHA256 (fet-6.28.2.tar.bz2) = 01cade508f3489362584c9d22bc492452fa8ffb9ae2043fb49bec912e6176e57
-SIZE (fet-6.28.2.tar.bz2) = 15396765
+TIMESTAMP = 1734118670
+SHA256 (fet-6.28.3.tar.bz2) = d29946327ad96b45d0d496c1d0a561d29eaf7bca202f2b4df016a9b4c9f9536d
+SIZE (fet-6.28.3.tar.bz2) = 15402429