build(deps): bump proptest from 1.3.1 to 1.4.0 (#5812)

Bumps [proptest](https://github.com/proptest-rs/proptest) from 1.3.1 to 1.4.0.
- [Release notes](https://github.com/proptest-rs/proptest/releases)
- [Changelog](https://github.com/proptest-rs/proptest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/proptest-rs/proptest/compare/v1.3.1...v1.4.0)

---
updated-dependencies:
- dependency-name: proptest
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

program/Cargo.toml

@@ -23,7 +23,7 @@ thiserror = "1.0"
 
 [dev-dependencies]
 lazy_static = "1.4.0"
-proptest = "1.3"
+proptest = "1.4"
 serial_test = "2.0.0"
 solana-program-test = "1.17.2"
 solana-sdk = "1.17.2"