Update dependencies for release 3.3.0.

Author: gkellogg

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [2.6, 2.7, '3.0', 3.1, 3.2, ruby-head, jruby]
+        ruby: ['3.0', 3.1, 3.2, ruby-head, jruby]
     steps:
       - name: Clone repository
         uses: actions/checkout@v3

Gemfile

@@ -31,6 +31,6 @@ group :test do
   gem "rake"
   gem "equivalent-xml"
   gem 'fasterer'
-  gem 'simplecov', '~> 0.21',  platforms: :mri
+  gem 'simplecov', '~> 0.22',  platforms: :mri
   gem 'simplecov-lcov', '~> 0.8',  platforms: :mri
 end

README.md

@@ -397,7 +397,7 @@ from BNode identity (i.e., they each entail the other)
 
 ## Dependencies
 
-* [Ruby](https://ruby-lang.org/) (>= 2.6)
+* [Ruby](https://ruby-lang.org/) (>= 3.0)
 * [LinkHeader][] (>= 0.0.8)
 * [bcp47_spec][] ( ~> 0.2)
 * Soft dependency on [RestClient][] (>= 2.1)
@@ -407,7 +407,7 @@ from BNode identity (i.e., they each entail the other)
 The recommended installation method is via [RubyGems](https://rubygems.org/).
 To install the latest official release of RDF.rb, do:
 
-    % [sudo] gem install rdf             # Ruby 2.6+
+    % [sudo] gem install rdf             # Ruby 3+
 
 ## Download
 

VERSION

@@ -1 +1 @@
-3.2.11
+3.3.0

rdf.gemspec

@@ -27,7 +27,7 @@ Gem::Specification.new do |gem|
   gem.executables        = %w(rdf)
   gem.require_paths      = %w(lib)
 
-  gem.required_ruby_version      = '>= 2.6'
+  gem.required_ruby_version      = '>= 3.0'
   gem.requirements               = []
   gem.add_runtime_dependency     'link_header', '~> 0.0', '>= 0.0.8'
   gem.add_runtime_dependency     'bcp47_spec',  '~> 0.2'
@@ -38,7 +38,7 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency 'rest-client', '~> 2.1'
   gem.add_development_dependency 'rspec',       '~> 3.12'
   gem.add_development_dependency 'rspec-its',   '~> 1.3'
-  gem.add_development_dependency 'webmock',     '~> 3.18'
+  gem.add_development_dependency 'webmock',     '~> 3.19'
   gem.add_development_dependency 'yard',        '~> 0.9'
   gem.add_development_dependency 'faraday',     '~> 1.10'
   gem.add_development_dependency 'faraday_middleware', '~> 1.2'