Update pyproject.toml to show license on PyPI

[matialm]

license it's not showing in pypi page

Resolves #

Description

Checklist

• I have read the contributing guide and understand what's expected of me
• I have signed the CLA
• This PR includes tests, or tests are not required/relevant for this PR
• I have run changie new to create a changelog entry

[cla-bot]

Thanks for your pull request, and welcome to our community! We require contributors to sign our Contributor License Agreement and we don't seem to have your signature on file. Check out this article for more information on why we have a CLA.

In order for us to review and merge your code, please submit the Individual Contributor License Agreement form attached above above. If you have questions about the CLA, or if you believe you've received this message in error, please reach out through a comment on this PR.

CLA has not been signed by users: @matialm

[QMalcolm]

Thank you for catching this and doing this work! ❤️ We should absolutely get this in to make it clear on PyPi what the license of this package is. One small change request for the changie doc, just to try and keep our changelog uniform. Thanks again!

[QMalcolm]

Looks great! Thanks again ❤️