cypari2 2.2.0 release candidate

[Matthias Koeppe]

I have prepared a release candidate for cypari 2.2.0

- https://pypi.org/project/cypari2/2.2.0rc1/

- Require cysignals >= 1.11.3, use the signal hook
  [`https://github.com/sagemath/cypari2/pull/130`] by @kliem
- Require Cython >= 3.0, use the trashcan for class Gen (finally upstreamed a patch that the Sage distribution carried for years)  [`https://github.com/sagemath/cypari2/pull/77`] by @jdemeyer

- In particular the binary wheels needs testing (built using Sage distribution + cibuildwheels for Linux and macOS, including arm64)

- Try with "pip install --pre cypari2"