net/syncthing: Update to 1.27.4

It needs to specify a specific go version now.

re: https://github.com/syncthing/syncthing/releases/tag/v1.27.4

PR:		277522

net/syncthing/Makefile

 PORTNAME=	syncthing
 DISTVERSIONPREFIX=	v
-DISTVERSION=	1.27.3
-PORTREVISION=	1
+DISTVERSION=	1.27.4
 CATEGORIES=	net
 MASTER_SITES=	https://github.com/${PORTNAME}/${PORTNAME}/releases/download/v${DISTVERSION}/
 DISTNAME=	${PORTNAME}-source-${DISTVERSIONFULL}
@@ -13,7 +12,7 @@ WWW=		https://syncthing.net/
 LICENSE=	MPL20
 LICENSE_FILE=	${WRKSRC}/${PORTNAME}/LICENSE
 
-USES=		cpe go:modules
+USES=		cpe go:1.21,modules
 
 USE_RC_SUBR=	syncthing syncthing-discosrv syncthing-relaysrv \
 		syncthing-relaypoolsrv

net/syncthing/distinfo

-TIMESTAMP = 1707224900
-SHA256 (syncthing-source-v1.27.3.tar.gz) = 3fe25b863bb3a0f74bc95a7afa71bdaa2a79971542962236be5d85f469aa897d
-SIZE (syncthing-source-v1.27.3.tar.gz) = 15007106
+TIMESTAMP = 1709714249
+SHA256 (syncthing-source-v1.27.4.tar.gz) = 6ce00ab281ee5eb0dc73c3664f36235137ca22b2911e375b8feead0038fb80a1
+SIZE (syncthing-source-v1.27.4.tar.gz) = 15085218