gh-101865: Deprecate `co_lnotab` from code objects as per PEP 626 by sobolevn · Pull Request #101866 · python/cpython

Looks good in general.
We aren't obliged to remove co_lnotab in 3.14, but we can. Perhaps change the "will"s to "may"s.

Not sure what to do about Misc/gdbinit though.