Switch to macOS-12 on GitHub Actions #3606

Job	Run time
Lint	3m 49s
Linux	7m 10s
Bazel Linux	42m 38s
Lint for Docs	13s
macOS	44m 39s
Bazel macOS	40m 38s
Bazel Windows	19m 27s
Build Number	0s
Wheel ${{ matrix.python }} Windows	0s
Nightly ${{ matrix.python }} Windows	0s
Test ${{ matrix.python }} Windows	0s
Wheel 3.9 macOS	31s
Wheel 3.10 macOS	33s
Wheel 3.11 macOS	33s
Wheel 3.12 macOS	31s
Test 3.9 macOS	3m 23s
Nightly ${{ matrix.python }} macOS	0s
Wheel 3.9 Linux	1m 6s
Wheel 3.10 Linux	1m 9s
Wheel 3.11 Linux	1m 15s
Wheel 3.12 Linux	1m 8s
Test 3.9 Linux	27m 37s
Nightly ${{ matrix.python }} Linux	0s
Release	0s
Release Candidate	0s
Docker Nightly	0s
Nightly	0s
Docker Release	0s
	3h 16m 20s

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