Include py3.15 in wheels

[ariebovenberg]

Description

Checklist

• Build runs successfully
• Type stubs updated
• Docs updated
• If docstrings were affected, check if they appear correctly in the docs as well as autocomplete

Release checklist (maintainers only)

• Version updated in pyproject.toml
• Version updated in changelog
• Branch merged
• Tag created and pushed
• Confirm publish job runs successfully
• Github release created

[ariebovenberg]

Looks like setup-python action isn't on 3.15rc1 yet