bump FFI to v0.12.67 #1578

Job	Run time
Make RTC sdist	14s
Build RTC wheels (aarch64)	1m 14s
Generating protobuf	18s
Build RTC wheels (x86_64)	54s
Build RTC wheels (AMD64)	1m 34s
Build RTC wheels (x86_64 arm64)	48s
Test (macos-latest, Python 3.14) / Test (macos-latest, Python 3.14)	2m 13s
Test (windows-latest, Python 3.12) / Test (windows-latest, Python 3.12)	1m 50s
Test (macos-latest, Python 3.12) / Test (macos-latest, Python 3.12)	2m 18s
Test (windows-latest, Python 3.9) / Test (windows-latest, Python 3.9)	2m 41s
Test (ubuntu-latest, Python 3.11) / Test (ubuntu-latest, Python 3.11)	1m 48s
Test (windows-latest, Python 3.14) / Test (windows-latest, Python 3.14)	2m 3s
Test (ubuntu-latest, Python 3.12) / Test (ubuntu-latest, Python 3.12)	1m 26s
Test (ubuntu-latest, Python 3.13) / Test (ubuntu-latest, Python 3.13)	1m 46s
Test (macos-latest, Python 3.9) / Test (macos-latest, Python 3.9)	3m 9s
Test (ubuntu-latest, Python 3.9) / Test (ubuntu-latest, Python 3.9)	1m 37s
Test (ubuntu-latest, Python 3.10) / Test (ubuntu-latest, Python 3.10)	1m 40s
Test (ubuntu-latest, Python 3.14) / Test (ubuntu-latest, Python 3.14)	1m 36s
Publish RTC release	0s
docs	0s
	29m 9s

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