Gate README security posture claims #135

Job	Run time
Format, lint, test, and audit	1m 13s
Miri	8m 10s
Platform tests (windows-latest)	38s
no_std target build (x86_64-unknown-freebsd)	18s
Platform tests (ubuntu-latest)	22s
Platform tests (macos-latest)	23s
no_std target build (x86_64-unknown-linux-gnu)	17s
no_std target build (thumbv7em-none-eabihf)	17s
no_std target build (wasm32-unknown-unknown)	20s
no_std target build (aarch64-unknown-linux-gnu)	22s
	12m 20s

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