devel/rubygem-prettyprint: Update to 0.2.0

Changes:	https://github.com/ruby/prettyprint/releases

devel/rubygem-prettyprint/Makefile

 PORTNAME=	prettyprint
-PORTVERSION=	0.1.1
+PORTVERSION=	0.2.0
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 

devel/rubygem-prettyprint/distinfo

-TIMESTAMP = 1635181699
-SHA256 (rubygem/prettyprint-0.1.1.gem) = fd112623243127d8c95c32997e78aa91c7d4d99a4abe25bb0e8ae2d7f9baab13
-SIZE (rubygem/prettyprint-0.1.1.gem) = 11776
+TIMESTAMP = 1699774840
+SHA256 (rubygem/prettyprint-0.2.0.gem) = 2bc9e15581a94742064a3cc8b0fb9d45aae3d03a1baa6ef80922627a0766f193
+SIZE (rubygem/prettyprint-0.2.0.gem) = 12288