Use client connection for GET requests (#21)

Ensure the configured client options (SSL, proxy, timeouts) are honored
by performing GETs via the client connection when fetching the OpenID
configuration and the JWKS certificates. Previously these requests used
Faraday.get, bypassing the client’s settings.

Additionally, add byebug for debugging, bump RuboCop and related cops,
update the RuboCop todo, and ignore .byebug_history.

Close ifad/omniauth-client#20

Author: tagliala

.gitignore

@@ -12,3 +12,5 @@
 spec/examples.txt
 
 Gemfile.lock
+
+.byebug_history

.rubocop_todo.yml

@@ -8,15 +8,16 @@ git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 gemspec
 
 gem 'bundler'
+gem 'byebug'
 gem 'rake'
 gem 'rspec'
 gem 'simplecov'
 gem 'webmock'
 
 if RUBY_VERSION >= '2.7'
-  gem 'rubocop', '1.77.0'
+  gem 'rubocop', '1.81.7'
   gem 'rubocop-packaging', '0.6.0'
-  gem 'rubocop-performance', '1.25.0'
+  gem 'rubocop-performance', '1.26.1'
   gem 'rubocop-rake', '0.7.1'
-  gem 'rubocop-rspec', '3.6.0'
+  gem 'rubocop-rspec', '3.7.0'
 end

Gemfile

@@ -28,7 +28,7 @@ def setup_phase
         config_url = URI.join(site, "#{auth_url_base}/realms/#{realm}/.well-known/openid-configuration")
 
         log :debug, "Going to get Keycloak configuration. URL: #{config_url}"
-        response = Faraday.get config_url
+        response = client.connection.get config_url
         if response.status == 200
           json = JSON.parse(response.body)
 
@@ -41,7 +41,7 @@ def setup_phase
 
           options.client_options.merge!({ authorize_url: @authorize_url, token_url: @token_url })
           log :debug, "Going to get certificates. URL: #{@certs_endpoint}"
-          certs = Faraday.get @certs_endpoint
+          certs = client.connection.get @certs_endpoint
           if certs.status == 200
             json = JSON.parse(certs.body)
             @certs = json['keys']