Bump `uucore` & `uutests` from `0.0.30` to `0.1.0` #529

Job	Run time
cargo check (windows-latest)	1m 14s
cargo check (ubuntu-latest)	20s
cargo check (macOS-latest)	23s
cargo test (macOS-latest)	31s
cargo fmt --all -- --check	15s
cargo test (ubuntu-latest)	34s
cargo test (windows-latest)	1m 8s
cargo clippy -- -D warnings (windows-latest)	1m 12s
cargo clippy -- -D warnings (macOS-latest)	25s
cargo clippy -- -D warnings (ubuntu-latest)	27s
Code Coverage (windows-latest, windows)	3m 49s
Code Coverage (ubuntu-latest, unix)	1m 43s
Code Coverage (macos-latest, macos)	1m 35s
	13m 36s

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