Fix configuration bug setting api_version

lib/whatsapp_sdk/api/client.rb

@@ -15,7 +15,7 @@ class Client
 
       def initialize(
         access_token = WhatsappSdk.configuration.access_token,
-        api_version = ApiConfiguration::DEFAULT_API_VERSION,
+        api_version = WhatsappSdk.configuration.api_version,
         logger = nil,
         logger_options = {}
       )

test/whatsapp/api/client_test.rb

@@ -4,6 +4,7 @@
 require 'test_helper'
 require 'api/client'
 require 'api/api_configuration'
+require 'whatsapp_sdk'
 
 module WhatsappSdk
   module Api
@@ -50,6 +51,16 @@ def test_send_request_delete_with_success_response
         assert_nil(response_body)
       end
 
+      def test_set_api_version_in_config
+        WhatsappSdk.configure do |config|
+          config.api_version = 'v16.0'
+        end
+        assert_match "v16.0", WhatsappSdk::Api::Client.new.inspect
+        WhatsappSdk.configure do |config|
+          config.api_version = Api::ApiConfiguration::DEFAULT_API_VERSION
+        end
+      end
+
       def test_valid_api_version
         invalid_api_version = 'v16.0'
         assert_silent do