Update rust CI macos runners (use 12/intel and 14/M1)

[orottier]

Hi @padenot let me know if you find this useful. I just ran the checks on my fork and I notice there are CI failures on clippy. I will have a look at those too.

[orottier]

The build still fails on the Mac M1 runners. I happen to have one too and I can confirm the tests fail. Is this platform supported?

AudioThreadPriorityError: thread promotion error: thread_policy_set: time_constraint
thread '<unnamed>' panicked at src/lib.rs:633:21:
assertion failed: false


failures:
    tests::it_works
    tests::it_works_in_different_threads

[orottier]

Okay, I decided to go for the green CI result. But tests are now disabled on both Ubuntu and MacOs

[padenot]

Yeah, we'll have to get it fixed. I've done this + updated the other OSes in #31, closing this one that had bitrotted.