Upgrade Python version to 3.10-3.14

[zxzxwu]

• Remove environment.yml - conda is outdated.
• Remove pre 3.9 conditioning
• Rust is not upgraded because pyo3-asyncio doesn't support

[zxzxwu]

@whitevegagabriel @barbibulle TBH I don't know why Rust tests fail. I cannot install pyo3 + 3.14 locally.

Maybe it's because pyo3 and pyo3-asyncio don't support 3.14? Can we just let Rust support stops at 3.13? I am also wondering what's the usage of Rust Bumble.

[whitevegagabriel]

It's not immediately clear what exactly is failing on Python 3.14. Pyo3 docs don't seem to mention lack of compatibility with it. @marshallpierce can provide context on how Rust Bumble is being used currently.

I imagine that if this PR is blocking other work, you can choose not to support Python 3.14 with Rust for the moment.

[zxzxwu]

pyo3 mentioned it's tested against 3.14 in 0.27+, but pyo3-asyncio has no new release since 2023 and the latest release atops pyo3 0.20.0. I am worried about the future support of pyo3-asyncio.

[whitevegagabriel]

Hm yeah that is concerning. I'll see if I can find a simple fix to this issue. I'm reproducing it locally. Otherwise my recommended next steps would be to hear from @marshallpierce or else don't support 3.14+ for the time being.

[marshallpierce]

Sorry, I'm not up to date on this -- I've been working on other things for a while.

[zxzxwu]

So I added a comment about the status of Rust, and pause it here until we find a solution.

[whitevegagabriel]

SGTM. Yeah unfortunately it looks like pyo3-asyncio is our limiting factor here since it cannot be updated past the same version of pyo3, and it looks like we need the latest version of pyo3 to support python 3.14.