Update rand requirement from 0.8 to 0.9 #95

Job	Run time
clippy (ubuntu-latest)	17s
rustfmt (ubuntu-latest)	14s
clippy (macos-latest)	20s
rustfmt (macos-latest)	15s
clippy (windows-latest)	17s
rustfmt (windows-latest)	31s
build (ubuntu-latest)	54s
build (macos-latest)	1m 3s
docs	20s
build (windows-latest)	59s
cross (aarch64-unknown-linux-gnu)	26s
cross (aarch64-linux-android)	23s
cross (aarch64-unknown-linux-musl)	20s
miri (ubuntu-latest)	39s
cross (i686-linux-android)	20s
sanitizer (ubuntu-latest)	38s
miri (macos-latest)	39s
miri (windows-latest)	13s
cross (x86_64-linux-android)	20s
test (ubuntu-latest)	27s
cross (i686-pc-windows-gnu)	23s
test (macos-latest)	37s
cross (x86_64-pc-windows-gnu)	20s
test (windows-latest)	27s
cross (i686-unknown-linux-gnu)	21s
cross (powerpc64-unknown-linux-gnu)	20s
cross (riscv64gc-unknown-linux-gnu)	24s
cross (wasm32-unknown-unknown)	17s
cross (wasm32-unknown-emscripten)	23s
cross (wasm32-wasip1)	22s
cross (wasm32-wasip1-threads)	24s
cross (wasm32-wasip2)	21s
coverage	0s
	14m 14s

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