Fix AVIF limits test (#2104) #1163

Job	Run time
test_avif	1m 5s
test_toolchains (1.61.0)	32s
test_toolchains (nightly)	1m 29s
build_benchmarks	50s
Fuzz targets (afl)	1m 44s
Fuzz targets (cargo-fuzz)	4m 25s
test_toolchains (beta)	1m 29s
clippy	2m 14s
public_private_dependencies	18s
rustfmt	5s
test_avif_decoding	1m 55s
test_features	23s
test_other_archs (powerpc-unknown-linux-gnu, default)	3m 25s
cargo-deny	51s
test_features (default)	1m 17s
test_other_archs (powerpc-unknown-linux-gnu, webp-encoder)	2m 13s
test_features (gif)	48s
test_features (jpeg)	41s
test_other_archs (i686-unknown-linux-gnu, default)	1m 21s
verify_msrv	2m 9s
test_features (png)	34s
test_features (tiff)	39s
test_features (ico)	32s
test_other_archs (i686-unknown-linux-gnu, webp-encoder)	52s
test_features (pnm)	45s
test_features (tga)	39s
test_features (webp)	32s
test_features (bmp)	24s
test_features (hdr)	29s
test_features (dxt)	30s
test_features (dds)	38s
test_features (farbfeld)	24s
test_features (openexr)	53s
test_features (jpeg_rayon)	47s
test_features (webp-encoder)	51s
	38m 43s

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