Update generated gemspec (#466)

I ran "bundle exec rake gem:gemspec" and this is what changed, except
the date (did not change the date as I think that should reflect when
releases are made).

Related to #460 and #463 that both updated the generated gemspec
directly. Includes the change from #425.

addressable.gemspec

@@ -6,30 +6,28 @@ Gem::Specification.new do |s|
   s.version = "2.8.0"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
+  s.metadata = { "changelog_uri" => "https://github.com/sporkmonger/addressable/blob/main/CHANGELOG.md" } if s.respond_to? :metadata=
   s.require_paths = ["lib".freeze]
   s.authors = ["Bob Aman".freeze]
   s.date = "2021-07-03"
   s.description = "Addressable is an alternative implementation to the URI implementation that is\npart of Ruby's standard library. It is flexible, offers heuristic parsing, and\nadditionally provides extensive support for IRIs and URI templates.\n".freeze
   s.email = "[email protected]".freeze
   s.extra_rdoc_files = ["README.md".freeze]
-  s.files = ["CHANGELOG.md".freeze, "Gemfile".freeze, "LICENSE.txt".freeze, "README.md".freeze, "Rakefile".freeze, "addressable.gemspec".freeze, "benchmark".freeze, "coverage".freeze, "data".freeze, "data/unicode.data".freeze, "documentation".freeze, "gemfiles".freeze, "lib".freeze, "lib/addressable".freeze, "lib/addressable.rb".freeze, "lib/addressable/idna".freeze, "lib/addressable/idna.rb".freeze, "lib/addressable/idna/native.rb".freeze, "lib/addressable/idna/pure.rb".freeze, "lib/addressable/template.rb".freeze, "lib/addressable/uri.rb".freeze, "lib/addressable/version.rb".freeze, "spec".freeze, "spec/addressable".freeze, "spec/addressable/idna_spec.rb".freeze, "spec/addressable/net_http_compat_spec.rb".freeze, "spec/addressable/security_spec.rb".freeze, "spec/addressable/template_spec.rb".freeze, "spec/addressable/uri_spec.rb".freeze, "spec/spec_helper.rb".freeze, "specdoc".freeze, "tasks".freeze, "tasks/clobber.rake".freeze, "tasks/gem.rake".freeze, "tasks/git.rake".freeze, "tasks/metrics.rake".freeze, "tasks/profile.rake".freeze, "tasks/rspec.rake".freeze, "tasks/yard.rake".freeze, "tmp".freeze]
+  s.files = ["CHANGELOG.md".freeze, "Gemfile".freeze, "LICENSE.txt".freeze, "README.md".freeze, "Rakefile".freeze, "data/unicode.data".freeze, "lib/addressable".freeze, "lib/addressable.rb".freeze, "lib/addressable/idna".freeze, "lib/addressable/idna.rb".freeze, "lib/addressable/idna/native.rb".freeze, "lib/addressable/idna/pure.rb".freeze, "lib/addressable/template.rb".freeze, "lib/addressable/uri.rb".freeze, "lib/addressable/version.rb".freeze, "spec/addressable".freeze, "spec/addressable/idna_spec.rb".freeze, "spec/addressable/net_http_compat_spec.rb".freeze, "spec/addressable/security_spec.rb".freeze, "spec/addressable/template_spec.rb".freeze, "spec/addressable/uri_spec.rb".freeze, "spec/spec_helper.rb".freeze, "tasks/clobber.rake".freeze, "tasks/gem.rake".freeze, "tasks/git.rake".freeze, "tasks/metrics.rake".freeze, "tasks/profile.rake".freeze, "tasks/rspec.rake".freeze, "tasks/yard.rake".freeze]
   s.homepage = "https://github.com/sporkmonger/addressable".freeze
   s.licenses = ["Apache-2.0".freeze]
   s.rdoc_options = ["--main".freeze, "README.md".freeze]
   s.required_ruby_version = Gem::Requirement.new(">= 2.2".freeze)
-  s.rubygems_version = "3.0.3".freeze
+  s.rubygems_version = "3.3.7".freeze
   s.summary = "URI Implementation".freeze
 
   if s.respond_to? :specification_version then
     s.specification_version = 4
+  end
 
-    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
-      s.add_runtime_dependency(%q<public_suffix>.freeze, [">= 2.0.2", "< 6.0"])
-      s.add_development_dependency(%q<bundler>.freeze, [">= 1.0", "< 3.0"])
-    else
-      s.add_dependency(%q<public_suffix>.freeze, [">= 2.0.2", "< 6.0"])
-      s.add_dependency(%q<bundler>.freeze, [">= 1.0", "< 3.0"])
-    end
+  if s.respond_to? :add_runtime_dependency then
+    s.add_runtime_dependency(%q<public_suffix>.freeze, [">= 2.0.2", "< 6.0"])
+    s.add_development_dependency(%q<bundler>.freeze, [">= 1.0", "< 3.0"])
   else
     s.add_dependency(%q<public_suffix>.freeze, [">= 2.0.2", "< 6.0"])
     s.add_dependency(%q<bundler>.freeze, [">= 1.0", "< 3.0"])