⬆️ Update proptest-derive requirement from ^0.4.0 to ^0.5.0 (#15)

Updates the requirements on [proptest-derive](https://github.com/proptest-rs/proptest) to permit the latest version.
- [Release notes](https://github.com/proptest-rs/proptest/releases)
- [Changelog](https://github.com/proptest-rs/proptest/blob/master/CHANGELOG.md)
- [Commits](proptest-rs/proptest@0.4.0...proptest-derive-0.5.0)

---
updated-dependencies:
- dependency-name: proptest-derive
  dependency-type: direct:production
...

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

Cargo.toml

@@ -18,7 +18,7 @@ num = "^0.4.1"
 ordered-float = "^4.2.0"
 
 proptest = { version = "1", optional = true, default-features = false, features = ["std"] }
-proptest-derive = { version = "^0.4.0", optional = true }
+proptest-derive = { version = "^0.5.0", optional = true }
 
 serde = { version = "1.0", default-features = false, features = [ "derive" ], optional = true }
 array-init = "^2.1.0"