.gemspec: bump required Ruby minimum #731

Author: michaelklishin

bunny.gemspec

@@ -10,7 +10,7 @@ Gem::Specification.new do |s|
   s.summary = "Popular easy to use Ruby client for RabbitMQ"
   s.description = "Easy to use, feature complete Ruby client for RabbitMQ 3.9 and later versions."
   s.license = "MIT"
-  s.required_ruby_version = Gem::Requirement.new(">= 2.5")
+  s.required_ruby_version = Gem::Requirement.new(">= 3.0")
 
   s.metadata = {
     "changelog_uri" => "https://github.com/ruby-amqp/bunny/blob/main/ChangeLog.md",