devel/rubygem-stringio: Update to 3.0.2

Changes:	https://github.com/ruby/stringio/commits/master

devel/rubygem-stringio/Makefile

 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	stringio
-PORTVERSION=	3.0.1
+PORTVERSION=	3.0.2
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 

devel/rubygem-stringio/distinfo

-TIMESTAMP = 1635181705
-SHA256 (rubygem/stringio-3.0.1.gem) = 2c1059769d7300a367d6d46ca7f20798e831b828bcda6a500bd3e0a1709366e3
-SIZE (rubygem/stringio-3.0.1.gem) = 15360
+TIMESTAMP = 1652122777
+SHA256 (rubygem/stringio-3.0.2.gem) = 71b79cbeb18070811a34aabff3beb9874d4fa2d1eebf7bbac7dea9454b07daca
+SIZE (rubygem/stringio-3.0.2.gem) = 15872