Fix deprecation warning in rails 7.1

lib/que.rb

@@ -89,7 +89,12 @@ def connection=(conn)
         if conn.to_s == 'ActiveRecord'
           # Load and setup AR compatibility.
           require_relative 'que/active_record/connection'
-          m = Que::ActiveRecord::Connection::JobMiddleware
+          m =
+            if ::ActiveRecord.gem_version >= Gem::Version.new('7.1')
+              Que::ActiveRecord::Connection::JobMiddlewareRails71
+            else
+              Que::ActiveRecord::Connection::JobMiddleware
+            end
           job_middleware << m unless job_middleware.include?(m)
           Que::ActiveRecord::Connection.method(:checkout)
         else

lib/que/active_record/connection.rb

@@ -46,6 +46,16 @@ def call(job)
           end
         end
       end
+
+      module JobMiddlewareRails71
+        class << self
+          def call(job)
+            yield
+
+            ::ActiveRecord::Base.connection_handler.clear_active_connections!(:all) unless job.class.resolve_que_setting(:run_synchronously)
+          end
+        end
+      end
     end
   end
 end