security/opkssh: unpin the Go version number

Reported by:        go (adamw)

security/opkssh/Makefile

@@ -11,14 +11,11 @@ COMMENT=	Tool which enables SSH to be used with OpenID Connect
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-USES=		go:1.23,modules
+USES=		go:modules
 USE_GITHUB=	yes
 GH_ACCOUNT=	openpubkey
 GO_BUILDFLAGS=	-ldflags "-X main.Version=${DISTVERSIONPREFIX}${DISTVERSION}"
 
-DEPRECATED=	Uses old go, but try building without USES=go:someversion
-EXPIRATION_DATE=2026-01-01
-
 SUB_FILES=	pkg-message
 SUB_LIST=	GROUP=${OPKSSH_GROUP} \
 		USER=${OPKSSH_USER}