Stop using deprecated macos-12 runner #3290

Job	Run time
Test with MIME database	3m 53s
Test Linux (latest stable Rust)	1m 58s
Test x86_64-unknown-linux-gnu	3m 24s
Test x86_64-pc-windows-msvc	4m 15s
Actionlint	57s
Test aarch64-unknown-linux-gnu	5m 39s
Rustfmt	1m 9s
Test x86_64-apple-darwin	1s
Check Linux Packaging	4m 6s
Test aarch64-apple-darwin	3m 28s
Output Regression Test	4m 44s
Test x86_64-unknown-linux-musl	3m 44s
	37m 18s

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