lms

build(deps): update signature requirement from 1.4.0 to 2.2.0 #211

Job	Run time
check-for-todos	3s
msrv	6m 13s
clippy	33s
rustfmt	10s
set-msrv	4s
build (1.57, thumbv7em-none-eabi)	32s
bench	26s
test (1.57)	34s
build (1.57, wasm32-unknown-unknown)	20s
cross (1.57, aarch64-unknown-linux-gnu, default)	13s
test (stable)	18s
build (stable, thumbv7em-none-eabi)	14s
cross (1.57, mips-unknown-linux-gnu, default)	10s
build (stable, wasm32-unknown-unknown)	29s
cross (stable, aarch64-unknown-linux-gnu, default)	26s
cross (stable, mips-unknown-linux-gnu, default)	6s
	10m 51s

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