Bump rand from 0.8.5 to 0.9.0 (#239)

Bumps [rand](https://github.com/rust-random/rand) from 0.8.5 to 0.9.0.
- [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
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -70,6 +70,6 @@ openapi-lint = { git = "https://github.com/oxidecomputer/openapi-lint", branch =
 openapiv3 = "2"
 portpicker = "0.1.1"
 pretty_assertions = "1"
-rand = "0.8"
+rand = "0.9"
 test-context = "0.4.1"
 testresult = "0.4.1"