Convert.py using old ruamel.yaml api

[bamarco]

Traceback (most recent call last):
  File "/home/monkey/micromamba/envs/boa-dev/bin/boa", line 33, in <module>
    sys.exit(load_entry_point('boa', 'console_scripts', 'boa')())
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/monkey/proj/lib/boa/boa/cli/boa.py", line 223, in main
    convert.main(args.target)
  File "/home/monkey/proj/lib/boa/boa/cli/convert.py", line 132, in main
    ruamel.yaml.load("".join(rest_lines), ruamel.yaml.RoundTripLoader)
  File "/home/monkey/micromamba/envs/boa-dev/lib/python3.11/site-packages/ruamel/yaml/main.py", line 1085, in load
    error_deprecation('load', 'load', arg=_error_dep_arg, comment=_error_dep_comment)
  File "/home/monkey/micromamba/envs/boa-dev/lib/python3.11/site-packages/ruamel/yaml/main.py", line 1039, in error_deprecation
    raise AttributeError(s, name=None)
AttributeError: 
"load()" has been removed, use

  yaml = YAML(typ='rt')
  yaml.load(...)

and register any classes that you use, or check the tag attribute on the loaded data,
instead of file "/home/monkey/proj/lib/boa/boa/cli/convert.py", line 132

        ruamel.yaml.load("".join(rest_lines), ruamel.yaml.RoundTripLoader)