deps: update rand requirement from 0.8 to 0.9 #648

Job	Run time
documentation	1m 19s
clippy	1m 5s
benchmarks	1m 10s
Optional features (none selected)	34s
rustfmt	17s
test (msrv, ubuntu-20.04, 1.77.0)	52s
test (stable, ubuntu-20.04, stable)	38s
Miri	2m 53s
Optional features (approx selected)	30s
test (beta, ubuntu-20.04, beta)	52s
test (nightly, ubuntu-20.04, nightly)	43s
static SuiteSparse (stable, ubuntu-20.04, stable)	36s
test (macos, macos-latest, stable)	37s
static SuiteSparse (macos, macos-latest, stable)	40s
test (win-msvc, windows-2019, stable)	19s
static SuiteSparse (win-msvc, windows-2019, stable)	1m 21s
test (win-gnu, windows-2019, stable)	51s
static SuiteSparse (win-gnu, windows-2019, stable)	1m 21s
	16m 38s

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