Tweak aarch64 #208

Job	Run time
docs	21s
feature checks	32s
Clippy	21s
Fuzz	33s
Miri (x86_64-unknown-linux-gnu, --no-default-features)	1m 8s
Miri (x86_64-unknown-linux-gnu)	1m 8s
Miri (x86_64-unknown-linux-gnu, --all-features)	1m 39s
Outdated	8s
fmt	18s
Test (x86_64-unknown-linux-gnu, nightly)	34s
Test (x86_64-unknown-linux-gnu, beta)	31s
Test (x86_64-unknown-linux-gnu, stable)	32s
Test (x86_64-unknown-linux-gnu, 1.64)	46s
Test (aarch64-unknown-linux-gnu, nightly)	1m 27s
Test (aarch64-unknown-linux-gnu, beta)	57s
Test (aarch64-unknown-linux-gnu, stable)	1m 8s
Test (aarch64-unknown-linux-gnu, 1.64)	1m 16s
	13m 19s

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