add some missing pypy builds for macos

[davidhewitt]

Change Summary

Add pypy builds for arm macos, which is supported since PyPy 3.8.

Related issue number

N/A

Checklist

• Unit tests for the changes exist
• Documentation reflects the changes where applicable
• Pydantic tests pass with this pydantic-core (except for expected changes)
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

Selected Reviewer: @samuelcolvin

[codspeed-hq]

CodSpeed Performance Report

Merging #894 will degrade performances by 12.34%

_{Comparing dh/macos-pypy-builds (9f6e5f9) with main (e56491e)}

Summary

🔥 3 improvements
❌ 1 regressions
✅ 134 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	dh/macos-pypy-builds	Change
🔥	test_complete_core_lax	1.8 ms	1.3 ms	+40.75%
🔥	test_set_of_ints_core_json_duplicates	5.5 ms	4.8 ms	+13.07%
❌	test_core_str	30.5 µs	34.8 µs	-12.34%
🔥	test_dont_raise_error	38.9 µs	29.2 µs	+33.13%

[davidhewitt]

please review

[davidhewitt]

test failure looks unrelated and should be fixed by #895