package/ruby: security bump to version 3.0.2

Fixes the following security issues:

- CVE-2021-31810: Trusting FTP PASV responses vulnerability in Net::FTP
- CVE-2021-32066: A StartTLS stripping vulnerability in Net::IMAP
- CVE-2021-31799: A command injection vulnerability in RDoc

For more details, see the announcement:
https://www.ruby-lang.org/en/news/2021/07/07/ruby-3-0-2-released/

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ruby/ruby.hash

@@ -1,5 +1,5 @@
-# https://www.ruby-lang.org/en/news/2021/04/05/ruby-3-0-1-released/
-sha512  97d2e883656060846b304368d9d836e2f3ef39859c36171c9398a0573818e4ed75bfd7460f901a9553f7f53518c505327a66e74f83704a881469f5ac61fe13d7  ruby-3.0.1.tar.xz
+# https://www.ruby-lang.org/en/news/2021/07/07/ruby-3-0-2-released/
+sha512  0f702e2d8ca1342a9d4284dbdd234a3588e057b92566353aa7c21835cf09a3932864b2acf459a976960a1704e9befa562155d36b98b7cda8bd99526e10a374c4  ruby-3.0.2.tar.xz
 # License files, Locally calculated
 sha256  274f8d7983052448e7fd691c81043465c92ee6fb7bd8ab3f20a7997862f2778e  LEGAL
 sha256  967586d538a28955ec2541910cf63c5ac345fcdea94bfb1f1705a1f6eb36bcbb  COPYING

package/ruby/ruby.mk

@@ -5,8 +5,8 @@
 ################################################################################
 
 RUBY_VERSION_MAJOR = 3.0
-RUBY_VERSION = $(RUBY_VERSION_MAJOR).1
-RUBY_VERSION_EXT = 3.0.1
+RUBY_VERSION = $(RUBY_VERSION_MAJOR).2
+RUBY_VERSION_EXT = 3.0.2
 RUBY_SITE = http://cache.ruby-lang.org/pub/ruby/$(RUBY_VERSION_MAJOR)
 RUBY_SOURCE = ruby-$(RUBY_VERSION).tar.xz
 RUBY_DEPENDENCIES = host-pkgconf host-ruby