chore: Remove macOS-12 since it's scheduled for removal #3271

Job	Run time
Publish binaries for ${{ matrix.os }}	0s
Test platform bridges (ubuntu-latest)	8m 42s
Formatting	23s
Test platform bridges (windows-latest)	12m 34s
Test platform bridges (macOS-13)	23m 40s
Build integrations tests (ubuntu-latest)	6m 17s
Test ubuntu-latest -- 22.3.0	12m 38s
Test platform bridges (macOS-14)	10m 5s
Build integrations tests (macOS-13)	12m 51s
Test ubuntu-latest -- 17	12m 56s
Test windows-latest -- 22.3.0	16m 30s
Test windows-latest -- 17	17m 0s
Test macOS-13 -- 22.3.0	19m 13s
Test macOS-13 -- 17	21m 31s
Test macOS-14 -- 22.3.0	13m 51s
Test macOS-14 -- 17	12m 30s
Release version on ${{ matrix.os }}	0s
	3h 20m 41s

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