Update annotation parsing to work with PEP 649 in Python 3.14

[jcrist]

It looks like accessing __annotations__ is likely to change in Python 3.13 3.14.

References:

• https://peps.python.org/pep-0649/
• The First Annual Meeting of the Extraordinary League of Runtime Typers beartype/beartype#335

AFAICT none of this has actually landed in the cpython git repo yet - if/once it does we can start evaluating what changes are needed here.

[edgarrmondragon]

Other links that may be useful for folks interested in getting this updated in preparation for Python 3.14:

• The Second Annual Meeting of the Extraordinary League of Runtime Typers beartype/beartype#479
• https://github.com/pydantic/typing-inspection
• https://typing-inspection.pydantic.dev/latest/usage/#fetching-type-hints

[return42]

It looks like accessing annotations is likely to change in Python 3.14.

@jcrist python 3.14 has been released .. and as you expected, msgspec do not work in Python 3.14 .. can you please review #852 from @JelleZijlstra / thanks!

Related:

• Add another maintainer? #875