security/openvpn-auth-oauth2: Do not depend on fixed Go version.

Do not require particular Go version to prevent build failures
in the future.

Requested by:	Adam Weinberger <adamw@FreeBSD.org>

security/openvpn-auth-oauth2/Makefile

@@ -1,7 +1,7 @@
 PORTNAME=	openvpn-auth-oauth2
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.26.4
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	security net net-vpn
 
 MAINTAINER=	otis@FreeBSD.org
@@ -13,7 +13,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 EXTRACT_DEPENDS=	${BUILD_DEPENDS}
 
-USES=		go:1.25,modules
+USES=		go:modules
 
 GO_MODULE=	github.com/jkroepke/openvpn-auth-oauth2
 GO_TARGET=	./cmd/openvpn-auth-oauth2