build(deps): update rand requirement from 0.8 to 0.9 (#3564)

* build(deps): 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](https://github.com/rust-random/rand/compare/0.8.0...0.9.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

* chore: fix rand upgrade

* chore: address clippy lint

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Rob Ede <robjtede@icloud.com>

actix-multipart/Cargo.toml

@@ -50,7 +50,7 @@ local-waker = "0.1"
 log = "0.4"
 memchr = "2.5"
 mime = "0.3"
-rand = "0.8"
+rand = "0.9"
 serde = "1"
 serde_json = "1"
 serde_plain = "1"