chore(deps): update rust crate libc to v0.2.169 #269

Job	Run time
cargo clippy -- -D warnings (ubuntu-latest)	12s
cargo check (ubuntu-latest)	16s
Code Coverage (ubuntu-latest, unix)	1m 39s
cargo check (macOS-latest)	12s
Code Coverage (macos-latest, macos)	2m 6s
cargo check (windows-latest)	1m 28s
Code Coverage (windows-latest, windows)	3m 42s
cargo clippy -- -D warnings (macOS-latest)	12s
cargo clippy -- -D warnings (windows-latest)	1m 20s
cargo fmt --all -- --check	4s
cargo test (ubuntu-latest)	18s
cargo test (macOS-latest)	18s
cargo test (windows-latest)	1m 46s
	13m 33s

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