Use `compression.zstd` on 3.14 and newer

[ngoldbaum]

I think it should be possible to drop the dependency on the external zstandard project on 3.14 and newer. That is particularly helpful on the free-threaded build, since zstandard doesn't yet ship 3.14t wheels.

[ngoldbaum]

There's also backports.zstd for 3.13 and older: https://pypi.org/project/backports.zstd/.

[Carreau]

Sent pr #2078

[Rogdham]

I think #2034 is already handling this. Also probably a duplicate of #2007.

[ngoldbaum]

Good point, I missed that!