Wrong type hint on idna.encode return

[pullpush-io]

Python 3.10.12 (main, Feb  4 2025, 14:57:36) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from ada_url import URL, idna
>>> idna.encode('example.com')
b'example.com'
>>> idna.encode('фси.рф')
b'xn--h1ari.xn--p1ai'
>>> 

ada-python/ada_url/ada_adapter.py

Line 751 in e005613

return ffi.string(val.data, val.length) if val.length else b''

Type hint is str while return value seems to bytes

[bbayles]

Thanks for the report. I made this PR to fix the issue: #107