Update rand requirement from 0.8 to 0.9

Updates the requirements on [rand](https://github.com/rust-random/rand) to permit the latest version.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](rust-random/rand@0.8.5...0.9.0)

---
updated-dependencies:
- dependency-name: rand
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

postgres-protocol/Cargo.toml

@@ -20,7 +20,7 @@ fallible-iterator = "0.2"
 hmac = "0.12"
 md-5 = "0.10"
 memchr = "2.0"
-rand = "0.8"
+rand = "0.9"
 sha2 = "0.10"
 stringprep = "0.1"
 getrandom = { version = "0.2", optional = true }

tokio-postgres/Cargo.toml

@@ -59,7 +59,7 @@ postgres-protocol = { version = "0.6.7", path = "../postgres-protocol" }
 postgres-types = { version = "0.2.8", path = "../postgres-types" }
 tokio = { version = "1.27", features = ["io-util"] }
 tokio-util = { version = "0.7", features = ["codec"] }
-rand = "0.8.5"
+rand = "0.9.0"
 whoami = "1.4.1"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]