fix: prevent race condition for socket (#134)

Author: supercaracal

lib/redis_client/cluster/pipeline.rb

@@ -155,9 +155,8 @@ def execute # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Met
             end
           end
 
+          threads.each(&:join)
           threads.each do |t|
-            t.join
-
             if t.thread_variable?(:replies)
               all_replies ||= Array.new(@size)
               @pipelines[t.thread_variable_get(:node_key)]