docs: improve security documentation #282

Job	Run time
Clippy and fmt	10s
OS Test (nightly, ubuntu-latest)	16s
Cargo deny (ubuntu-latest)	16s
WASI P1 Test Build	14s
WASI P2 Test Build	14s
WASM Test Build	12s
OS Test (nightly, windows-latest)	36s
OS Test (nightly, macos-latest)	27s
OS Test (stable, ubuntu-latest)	10s
OS Test (stable, windows-latest)	1m 38s
OS Test (stable, macos-latest)	17s
OS Test (1.63, ubuntu-latest)	1m 57s
OS Test (1.63, windows-latest)	2m 22s
OS Test (1.63, macos-latest)	1m 46s
	10m 35s

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