Allow Pyo3 0.25

[a1phyr]

No description provided.

[vorner]

Hello

I'm all for the part of allowing newer pyo3.

I'm a bit split on bumping the minimal version. Is there a good motivation to do so?

And, is there a good reason why you're changing the provider of the toolchain for the CI? Did the actions-rs stop working, or something?

[a1phyr]

I'm a bit split on bumping the minimal version. Is there a good motivation to do so?

Well, 1.63 is the MSRV of pyo3 since 0.22, so it makes sense to require it too.

And, is there a good reason why you're changing the provider of the toolchain for the CI? Did the actions-rs stop working, or something?

Technically it still works, but it uses deprecated API (eg see warnings at the end of this action run) and has been archived since october 2023. I used dtolnay/rust-toolchain instead because it is used in the other jobs.

[vorner]

Thanks, that explanation makes sense. I've merged it and released.