mail/rubygem-net-imap: Update to 0.2.1

Changes:	https://github.com/ruby/net-imap/commits/master

mail/rubygem-net-imap/Makefile

 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	net-imap
-PORTVERSION=	0.1.1
+PORTVERSION=	0.2.1
 CATEGORIES=	mail rubygems
 MASTER_SITES=	RG
 

mail/rubygem-net-imap/distinfo

-TIMESTAMP = 1609598815
-SHA256 (rubygem/net-imap-0.1.1.gem) = ef0907ac9f92cf591de9702ec81d09f299fbcd305555e2ed3986bbaf7b7f36bd
-SIZE (rubygem/net-imap-0.1.1.gem) = 32768
+TIMESTAMP = 1618320968
+SHA256 (rubygem/net-imap-0.2.1.gem) = 01bf4cb040ba564d359f6248769c421fff0cd938be3661f5abb0559d9e7eee06
+SIZE (rubygem/net-imap-0.2.1.gem) = 35840