[CI] [Mac] Failure to compile Cython for deplyment target MacOS

[Liam-Sturge]

Expected behavior

The CI Github actions workflow defined in wheel_winmac_nightly.yaml will compile Cython successfully and complete the build without failure.

---

Actual behavior

The CI builds for Mac fail because the expected deployment target with Cython v0.29.34 is MacOS v11.7. The wheel_winmac_nightly.yaml file specifies that the deployment target will be MacOS v10.15, which is incompatible. This is not actually recorded in the logs, but the failure happens when

---

Background information

Cython v3.0.0 was recently released (https://github.com/cython/cython/releases/tag/3.0.0) and is used in newly built docker images. This causes a compilation issue since 3.0.0 expects function definitions to be explicitly declared with the noexcept annotation. This change should be backwards compatible to v0.29.31. For more details see the discussion here: scipy/scipy#17234 (comment).

We can workaround this Cython problem by pinning the version to v0.29.34, but this introduces the issue described above.

---

Environment

CI - Wheel-WinMac-Nightly

[tqchen]

With apache/tvm#15469 Hopefully we can get up to speed with cython3 and remove the pinning