[API] Updates inference.update to use PUT

Author: picandocodigo

elasticsearch-api/lib/elasticsearch/api/actions/inference/update.rb

@@ -50,7 +50,7 @@ def update(arguments = {})
 
           _task_type = arguments.delete(:task_type)
 
-          method = Elasticsearch::API::HTTP_POST
+          method = Elasticsearch::API::HTTP_PUT
           path   = if _task_type && _inference_id
                      "_inference/#{Utils.__listify(_task_type)}/#{Utils.__listify(_inference_id)}/_update"
                    else

elasticsearch-api/spec/elasticsearch/api/actions/inference/update_spec.rb

@@ -20,7 +20,7 @@
 describe 'client#inference.update' do
   let(:expected_args) do
     [
-      'POST',
+      'PUT',
       '_inference/foo/bar/_update',
       {},
       nil,