fix swap_connection_handler method definition

  swap_connection_handler method has been removed since rails 7.1
  ref: rails/rails@1bbaf0d

lib/octoball/connection_handling.rb

@@ -4,13 +4,15 @@ class Octoball
   module ConnectionHandlingAvoidAutoLoadProxy
     private
 
-    def swap_connection_handler(handler, &blk)
-      old_handler, ActiveRecord::Base.connection_handler = ActiveRecord::Base.connection_handler, handler
-      return_value = yield
-      return_value.load if !return_value.respond_to?(:ar_relation) && return_value.is_a?(ActiveRecord::Relation)
-      return_value
-    ensure
-      ActiveRecord::Base.connection_handler = old_handler
+    if ActiveRecord.gem_version < Gem::Version.new('7.1.0')
+      def swap_connection_handler(handler, &blk)
+        old_handler, ActiveRecord::Base.connection_handler = ActiveRecord::Base.connection_handler, handler
+        return_value = yield
+        return_value.load if !return_value.respond_to?(:ar_relation) && return_value.is_a?(ActiveRecord::Relation)
+        return_value
+      ensure
+        ActiveRecord::Base.connection_handler = old_handler
+      end
     end
   end