Update rand requirement from 0.8 to 0.9 #1648

Job	Run time
setup	4s
extract-header-only-ml-dsa	3m 8s
extract	2m 50s
extract-header-only-ml-kem	2m 57s
build-header-only-ml-dsa (macos-latest)	15s
build-header-only-ml-dsa (ubuntu-latest)	15s
diff-header-only-ml-dsa	5s
build-header-only-ml-dsa (windows-latest)	56s
diff	5s
build (macos-latest)	4m 18s
build (ubuntu-latest)	23m 38s
build (windows-latest)	2m 23s
diff-header-only-ml-kem	4s
build-header-only-ml-kem (macos-latest)	21s
build-header-only-ml-kem (ubuntu-latest)	22s
build-header-only-ml-kem (windows-latest)	1m 21s
report-status-tests	1s
report-status-all	1s
	43m 4s

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