mail/rubygem-mail: Fix dependency with Ruby 3.1

In Ruby 3.1 net/smtp is distributed as bundled gem. On the other hand,
our ruby ports (lang/rubyXY) don't include bundled gems in their
packages and it also applies to lang/ruby31. That means net/smtp isn't
include in the package of Ruby 3.1. So add mail/rubygem-net-smtp to
RUN_DEPENDS so this port works fine with Ruby 3.1.

PR:		262088
Approved by:	portmgr (blanket: dependency fix)
MFH:		2022Q1 (dependency fix)

mail/rubygem-mail/Makefile

@@ -2,6 +2,7 @@
 
 PORTNAME=	mail
 PORTVERSION=	2.7.1
+PORTREVISION=	1
 PORTEPOCH=	2
 CATEGORIES=	mail rubygems
 MASTER_SITES=	RG
@@ -12,7 +13,8 @@ COMMENT=	Ruby email handler
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/MIT-LICENSE
 
-RUN_DEPENDS=	rubygem-mini_mime>=0.1.1:mail/rubygem-mini_mime
+RUN_DEPENDS=	rubygem-mini_mime>=0.1.1:mail/rubygem-mini_mime \
+		rubygem-net-smtp>0:mail/rubygem-net-smtp
 
 USES=		cpe gem
 CPE_VENDOR=	${PORTNAME}_project

mail/rubygem-mail/files/patch-mail.gemspec

@@ -0,0 +1,18 @@
+--- mail.gemspec.orig	2021-11-10 18:38:59 UTC
++++ mail.gemspec
+@@ -24,6 +24,7 @@ Gem::Specification.new do |s|
+   end
+
+   if s.respond_to? :add_runtime_dependency then
++    s.add_runtime_dependency(%q<net-smtp>.freeze, [">= 0"])
+     s.add_runtime_dependency(%q<mini_mime>.freeze, [">= 0.1.1"])
+     s.add_development_dependency(%q<bundler>.freeze, [">= 1.0.3"])
+     s.add_development_dependency(%q<rake>.freeze, ["> 0.8.7"])
+@@ -31,6 +32,7 @@ Gem::Specification.new do |s|
+     s.add_development_dependency(%q<rdoc>.freeze, [">= 0"])
+     s.add_development_dependency(%q<rufo>.freeze, [">= 0"])
+   else
++    s.add_dependency(%q<net-smtp>.freeze, [">= 0"])
+     s.add_dependency(%q<mini_mime>.freeze, [">= 0.1.1"])
+     s.add_dependency(%q<bundler>.freeze, [">= 1.0.3"])
+     s.add_dependency(%q<rake>.freeze, ["> 0.8.7"])