Fix rubocop failures

Author: jterapin

lib/aws-record/record/item_operations.rb

@@ -244,7 +244,7 @@ def _invalid_record?(_opts)
         end
       end
 
-      def _perform_save(opts)
+      def _perform_save(opts) # rubocop:disable Naming/PredicateMethod
         force = opts.delete(:force)
         expect_new = expect_new_item?
         if force

lib/aws-record/record/table_config.rb

@@ -347,7 +347,7 @@ def _create_table_opts
         opts
       end
 
-      def _add_global_secondary_index_throughput(opts, resp_gsis)
+      def _add_global_secondary_index_throughput(opts, resp_gsis) # rubocop:disable Naming/PredicateMethod
         gsis = resp_gsis.map(&:index_name)
         gsi_updates = []
         gsis.each do |index_name|