chore(deps): update rust crate regex to v1.12.4 #781

Job	Run time
cargo clippy -- -D warnings (windows-latest)	34s
cargo fmt --all -- --check	12s
cargo test (macOS-latest)	3m 46s
cargo check (ubuntu-latest)	13s
Code Coverage (ubuntu-latest, unix)	2m 11s
cargo check (macOS-latest)	18s
cargo check (windows-latest)	1m 29s
Code Coverage (macos-latest, macos)	3m 10s
cargo test (ubuntu-latest)	54s
cargo clippy -- -D warnings (macOS-latest)	22s
cargo test (windows-latest)	5m 8s
cargo clippy -- -D warnings (ubuntu-latest)	23s
Code Coverage (windows-latest, windows)	7m 45s
	26m 25s

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