net/rubygem-rbvmomi2: Update to 3.8.0

Changes:	https://github.com/ManageIQ/rbvmomi2/blob/master/CHANGELOG.md

net/rubygem-rbvmomi2/Makefile

 PORTNAME=	rbvmomi2
-PORTVERSION=	3.7.1
+PORTVERSION=	3.8.0
 CATEGORIES=	net rubygems
 MASTER_SITES=	RG
 

net/rubygem-rbvmomi2/distinfo

-TIMESTAMP = 1712427988
-SHA256 (rubygem/rbvmomi2-3.7.1.gem) = 365f7ce994ea9ec89de5543ac49a9580ff8167b1ac6789194b99a18488458774
-SIZE (rubygem/rbvmomi2-3.7.1.gem) = 270848
+TIMESTAMP = 1720364893
+SHA256 (rubygem/rbvmomi2-3.8.0.gem) = b25c0e0a5d0c28db116656d66fba496fec37fdac5925ab9b5754a2b3b09d5fde
+SIZE (rubygem/rbvmomi2-3.8.0.gem) = 272896