Fix cargo deny warnings and errors #1587

Job	Run time
build_benchmarks	45s
Fuzz targets (afl)	2m 7s
cargo-deny	16s
Fuzz targets (cargo-fuzz)	52s
cargo-semver-checks	27s
clippy	2m 6s
public_private_dependencies	24s
rustfmt	6s
test_avif_decoding	1m 24s
test_other_archs (powerpc-unknown-linux-gnu)	2m 19s
test_features	37s
test_other_archs (i686-unknown-linux-gnu)	1m 21s
test_features (default)	1m 47s
test_toolchains (1.67.1)	30s
test_features (rayon)	30s
test_toolchains (nightly)	1m 2s
test_toolchains (beta)	1m 17s
test_features (avif)	1m 3s
test_features (bmp)	22s
test_features (dds)	23s
test_features (exr)	32s
test_features (ff)	30s
test_features (gif)	31s
test_features (hdr)	30s
test_features (ico)	32s
test_features (jpeg)	33s
test_features (png)	26s
test_features (pnm)	20s
test_features (qoi)	19s
test_features (tga)	33s
test_features (tiff)	31s
test_features (webp)	30s
	25m 25s

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