www/rubygem-rdf: Update to 3.2.7

Changes:	https://github.com/ruby-rdf/rdf/releases

www/rubygem-rdf/Makefile

 # Created by: TAKATSU Tomonari <tota@FreeBSD.org>
 
 PORTNAME=	rdf
-PORTVERSION=	3.2.6
+PORTVERSION=	3.2.7
 CATEGORIES=	www rubygems
 MASTER_SITES=	RG
 

www/rubygem-rdf/distinfo

-TIMESTAMP = 1648249114
-SHA256 (rubygem/rdf-3.2.6.gem) = 9a4a16206d39db61f798a7c4b9ef11f3c55cae5f76d839f4308c304df4b4d256
-SIZE (rubygem/rdf-3.2.6.gem) = 156160
+TIMESTAMP = 1650970279
+SHA256 (rubygem/rdf-3.2.7.gem) = d05ff50963d213f32580bddfec9a2f1bf33b25c4055ae55e6d86ced614cecbd4
+SIZE (rubygem/rdf-3.2.7.gem) = 156160