Use ArrayVec from hoot #2339

Job	Run time
Lint	14s
build_versions (stable)	2m 37s
build_versions (beta)	2m 44s
Test	36s
build_versions (1.67.0)	3m 9s
Test (charset)	39s
Test	25s
cargo-deny (aarch64-apple-ios)	20s
Test (charset)	28s
Test (cookies)	44s
cargo-deny (aarch64-linux-android)	19s
Test (socks-proxy)	46s
Test (cookies)	30s
Docs	20s
Test (socks-proxy)	25s
Test (gzip)	38s
Test (gzip)	31s
Test (brotli)	35s
Test (brotli)	27s
Test (json)	1m 16s
cargo-deny (i686-pc-windows-gnu)	16s
Test (native-tls)	42s
Test (json)	28s
cargo-deny (i686-pc-windows-msvc)	17s
Test (native-tls)	32s
cargo-deny (i686-unknown-linux-gnu)	18s
cargo-deny (wasm32-unknown-unknown)	16s
cargo-deny (x86_64-apple-darwin)	17s
cargo-deny (x86_64-apple-ios)	21s
cargo-deny (x86_64-pc-windows-gnu)	21s
cargo-deny (x86_64-pc-windows-msvc)	18s
cargo-deny (x86_64-unknown-linux-gnu)	19s
cargo-deny (x86_64-unknown-redox)	18s
	22m 26s

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