chore(deps): update rust crate uucore to 0.0.28 #316

Job	Run time
cargo fmt --all -- --check	5s
cargo check (ubuntu-latest)	10s
cargo clippy -- -D warnings (ubuntu-latest)	16s
cargo check (macOS-latest)	11s
cargo clippy -- -D warnings (macOS-latest)	12s
Code Coverage (ubuntu-latest, unix)	1m 40s
cargo check (windows-latest)	1m 46s
cargo clippy -- -D warnings (windows-latest)	38s
Code Coverage (macos-latest, macos)	1m 31s
Code Coverage (windows-latest, windows)	3m 43s
cargo test (ubuntu-latest)	21s
cargo test (macOS-latest)	17s
cargo test (windows-latest)	51s
	11m 41s

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