chore(main): release srgn 0.12.0 #290

Job	Run time
Run benchmarks for `--files` option	5m 18s
Build and test (ubuntu-latest)	1m 11s
Build and test with coverage (--lib, unit)	1m 9s
Build and test (macos-latest)	1m 8s
Build and test with coverage (--test '*', integration)	2m 31s
Build and test (windows-latest)	1m 47s
Build and test with coverage (--doc, doc)	1m 59s
Build and test feature powerset	2m 49s
Build and test with coverage (--all-targets, all-targets)	2m 21s
Build and test with coverage (--all-targets --doc, total)	4m 8s
Execute release chores	12s
Verify MSRV (Minimum Supported Rust Version)	32s
Build and upload binaries	0s
Publish to crates.io	0s
Turn release draft into full release	0s
Test installation and running via cargo-binstall	0s
	25m 5s

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