Update rand_pcg requirement from 0.3 to 0.9

Updates the requirements on [rand_pcg](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@rand_pcg-0.3.0...rand_pcg-0.3.1)

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

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

Cargo.toml

@@ -58,7 +58,7 @@ num-complex = "0.4"
 num-traits = "0.2.15"
 rand = "0.8"
 rand_distr = "0.4"
-rand_pcg = "0.3"
+rand_pcg = "0.9"
 serde = { version = "1", features = ["derive"], optional = true }
 thiserror = "2"