Update buck2 to 2024-12-16

[swolchok]

Summary

Fixes#7425. Filed facebook/buck2#828 to make this easier in the future.

Test plan

Relying on CI. Manually confirmed that this unblocks building on Raspberry Pi 5 (though there is at least one more build break underneath).

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/7448

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

✅ You can merge normally! (1 Unrelated Failure)

As of commit 2764f3d with merge base 62c6346 ():

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Apple / test-demo-ios / mobile-job (ios) (gh) (trunk failure)
  Final attempt failed. Child_process exited with error code 1

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[swolchok]

build-benchmark-app failure (and others?) appear to be unrelated: ```2024-12-27T17:51:57.9062520Z /Users/runner/work/_temp/44702da2-4c2d-4eb2-a2a6-7352a08c1006.sh: line 10: /Users/runner/work/_temp/github_env_12519068607: No such file or directory

[swolchok]

zstd: buck2-aarch64-apple-darwin-2024-12-16.zst: unsupported format

wat

[swolchok]

wait, why are we fetching buck from some custom server instead of github?

[swolchok]

wait, why are we fetching buck from some custom server instead of github?

https://github.com/pytorch/executorch/blob/main/.ci/scripts/setup-macos.sh#L31

contacting PT Dev Infra now

[huydhn]

Just want to confirm that this 3rd-party update is expected

[swolchok]

prelude versions are matched to buck versions; we have to do the update

[swolchok]

test-demo-ios has been red for weeks. ignoring and landing.