update most code to rand 0.9 (#8828)

With this PR, almost all code now uses rand 0.9. The only exception is
the bootstore which uses vsss-rs (and which I believe will be going away
at some point).

Author: sunshowers

Cargo.lock

@@ -639,12 +639,12 @@ propolis-mock-server = { git = "https://github.com/oxidecomputer/propolis", rev
 proptest = "1.7.0"
 qorb = "0.4.1"
 quote = "1.0"
-rand = "0.8.5"
-# We're still in the middle of migrating to rand 0.9.
-rand09 = { package = "rand", version = "0.9.1" }
-rand_core = "0.6.4"
-rand_distr = "0.4.3"
-rand_seeder = "0.3.0"
+# Some dependencies still require rand 0.8.x.
+rand08 = { package = "rand", version = "0.8.5" }
+rand = "0.9.2"
+rand_core = "0.9.3"
+rand_distr = "0.5.1"
+rand_seeder = "0.4.0"
 range-requests = { path = "range-requests" }
 ratatui = "0.29.0"
 rayon = "1.10"