Recognize '.jfif' extension as JPEG file (#2362) #1649

Job	Run time
cargo-deny	19s
Fuzz targets (afl)	2m 13s
build_benchmarks	45s
Fuzz targets (cargo-fuzz)	53s
cargo-semver-checks	28s
clippy	2m 2s
public_private_dependencies	24s
rustfmt	15s
test_avif_decoding	1m 23s
test_other_archs (powerpc-unknown-linux-gnu)	2m 51s
test_features	25s
test_other_archs (i686-unknown-linux-gnu)	1m 48s
test_toolchains (1.70.0)	37s
test_features (default)	1m 51s
test_toolchains (nightly)	1m 44s
test_features (rayon)	35s
test_toolchains (beta)	1m 49s
test_features (avif)	59s
test_features (bmp)	33s
test_features (dds)	33s
test_features (exr)	39s
test_features (ff)	30s
test_features (gif)	32s
test_features (hdr)	31s
test_features (ico)	41s
test_features (jpeg)	34s
test_features (png)	36s
test_features (pnm)	38s
test_features (qoi)	33s
test_features (tga)	31s
test_features (tiff)	44s
test_features (webp)	36s
	29m 32s

Provide feedback