Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?

Description

pyproject.toml file had a format change.

Previous:
licence: "MIT"

Now:
license = { text = "MIT" }

Source: https://python-poetry.org/docs/pyproject/#license

Not following this change leads to this error when trying to upload the package generated to PyPi:

ERROR    InvalidDistribution: Invalid distribution metadata: unrecognized or    
         malformed field 'license-expression' 

Also, I did not find a way to change the license used by setting a var in config file.

openapi-generator version

7.14.0

Suggest a fix

Use this new format in pyproject.mustache file.