Fix excessive stack sizes #2714

Job	Run time
build_versions (stable)	14s
Test	36s
build_versions (beta)	3m 4s
Test	39s
Test (charset)	38s
cargo-deny (aarch64-apple-ios)	21s
build_versions (1.71.1)	17s
Test (charset)	39s
Test (cookies)	38s
cargo-deny (aarch64-linux-android)	23s
Test (cookies)	42s
Test (socks-proxy)	38s
cargo-deny (i686-pc-windows-gnu)	23s
Docs	1m 45s
Test (socks-proxy)	38s
Test (gzip)	38s
cargo-deny (i686-pc-windows-msvc)	18s
Test (brotli)	38s
Test (gzip)	37s
cargo-deny (i686-unknown-linux-gnu)	20s
Test (brotli)	39s
Lint	33s
Test (json)	37s
cargo-deny (wasm32-unknown-unknown)	19s
Test (json)	42s
Test (native-tls)	37s
cargo-deny (x86_64-apple-darwin)	22s
Test (native-tls)	38s
Test (rustls-no-provider)	37s
cargo-deny (x86_64-apple-ios)	18s
cargo-deny (x86_64-pc-windows-gnu)	21s
cargo-deny (x86_64-pc-windows-msvc)	18s
cargo-deny (x86_64-unknown-linux-gnu)	18s
cargo-deny (x86_64-unknown-redox)	21s
	20m 46s

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