Alias error with Ruby 3.1.1

[federicopolesello]

Hi guys,
I'm trying to add a variable in the YAML file in order to reuse it in some points in the same file.

code:
  org:
    service-one:
      version: *version
      generators:
        dart_2_17_json:
          target: source

Running the command apibuilder update --path .apibuilder.yml it works running it on a macOS with ruby version 2.6.10 but it doesn't work running it on a macOS with ruby version 3.1.1.

/Users/federico/.rbenv/versions/3.1.1/lib/ruby/3.1.0/psych/visitors/to_ruby.rb:430:in `visit_Psych_Nodes_Alias': Unknown alias: version (Psych::BadAlias)

Searching I found this possible issue but I'm not sure.
https://stackoverflow.com/questions/71191685/visit-psych-nodes-alias-unknown-alias-default-psychbadalias

Do you have any idea how I can solve it keeping the latest ruby version?
Thanks