chore(deps): bump rand from 0.8.5 to 0.9.3 in /packages/wasm-mps

Bumps [rand](https://github.com/rust-random/rand) from 0.8.5 to 0.9.3.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/0.9.3/CHANGELOG.md)
- [Commits](rust-random/rand@0.8.5...0.9.3)

---
updated-dependencies:
- dependency-name: rand
  dependency-version: 0.9.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

packages/wasm-mps/Cargo.lock

@@ -18,7 +18,7 @@ crypto_box = "0.9"
 getrandom = { version = "0.2", features = ["js"] }
 js-sys = "0.3"
 multi-party-schnorr = { git = "https://github.com/silence-laboratories/multi-party-schnorr.git", rev = "7511971e757a2260afa797283cf239c9cdfd5f19", features = ["serde"]}
-rand = "0.8"
+rand = "0.9"
 serde = { version = "1.0", features = ["derive"] }
 thiserror = "2.0.18"
 wasm-bindgen = "0.2"