chore: Fix cargo-deny configuration #19

Job	Run time
Check formatting	11s
Check committed C header	36s
find-msrv	3s
cargo clippy (macOS-latest)	11s
cargo clippy (windows-2019)	1m 7s
cargo clippy (ubuntu-latest)	12s
cargo test (macOS-latest)	22s
cargo-deny aarch64-apple-darwin	31s
cargo test (windows-2019)	43s
cargo-deny i686-pc-windows-gnu	39s
cargo test (ubuntu-latest)	16s
cargo-deny i686-pc-windows-msvc	31s
cargo-deny i686-unknown-linux-gnu	32s
cargo-deny x86_64-apple-darwin	31s
cargo-deny x86_64-pc-windows-gnu	32s
cargo-deny x86_64-pc-windows-msvc	37s
cargo-deny x86_64-unknown-linux-gnu	33s
cargo-deny x86_64-unknown-linux-musl	29s
	8m 36s

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