Merge pull request #2007 from fintelia/png-gamma #996

Job	Run time
Fuzz targets (cargo-fuzz)	8m 9s
build_benchmarks	1m 14s
Fuzz targets (afl)	1m 55s
cargo-deny	32s
clippy	3m 7s
public_private_dependencies	26s
rustfmt	5s
test_avif	1m 49s
test_avif_decoding	1m 59s
test_big_endian	1m 33s
test_big_endian (default)	3m 20s
test_features	46s
test_toolchains (1.61.0)	4m 25s
verify_msrv	3m 34s
test_big_endian (webp)	2m 43s
test_features (default)	2m 7s
test_toolchains (nightly)	2m 50s
test_features (gif)	51s
test_big_endian (webp-encoder)	2m 52s
test_toolchains (beta)	2m 8s
test_features (jpeg)	1m 0s
test_features (png)	57s
test_features (tiff)	1m 1s
test_features (ico)	1m 8s
test_features (pnm)	56s
test_features (tga)	41s
test_features (webp)	45s
test_features (bmp)	1m 6s
test_features (hdr)	52s
test_features (dxt)	52s
test_features (dds)	40s
test_features (farbfeld)	40s
test_features (openexr)	1m 18s
test_features (jpeg_rayon)	1m 3s
test_features (webp-encoder)	1m 25s
	1h 0m 49s

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