Update Rust crate regex to v1.10.6 #249

Job	Run time
cargo fmt --all -- --check	10s
cargo check (ubuntu-latest)	18s
Code Coverage (ubuntu-latest, unix)	2m 5s
cargo clippy -- -D warnings (ubuntu-latest)	11s
cargo check (macOS-latest)	12s
Code Coverage (macos-latest, macos)	2m 20s
cargo clippy -- -D warnings (macOS-latest)	14s
cargo check (windows-latest)	1m 39s
Code Coverage (windows-latest, windows)	5m 40s
GNU test suite	25s
cargo clippy -- -D warnings (windows-latest)	1m 14s
cargo test (ubuntu-latest)	44s
cargo test (macOS-latest)	3m 16s
cargo test (windows-latest)	4m 17s
	22m 45s

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