devel/fossil: update to 2.15

Changes: https://fossil-scm.org/home/doc/trunk/www/changes.wiki#v2_15

devel/fossil/Makefile

 # $FreeBSD$
 
 PORTNAME=	fossil
-PORTVERSION=	2.14
+PORTVERSION=	2.15
 DISTVERSIONPREFIX=	src-
 #PORTREVISION=	0
 PORTEPOCH=	2

devel/fossil/distinfo

-TIMESTAMP = 1611650826
-SHA256 (fossil-src-2.14.tar.gz) = b8d0c920196dd8ae29152fa7448e513a1fa7c588871b785e3fbfc07b42a05fb9
-SIZE (fossil-src-2.14.tar.gz) = 6207277
+TIMESTAMP = 1617103985
+SHA256 (fossil-src-2.15.tar.gz) = 671edda9a014474d0f07b4c616b37222e218275b3c8e5414657830c6f351877b
+SIZE (fossil-src-2.15.tar.gz) = 6222434