chore(deps): update rust crate proptest to v1.5.0 (#76)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [proptest](https://proptest-rs.github.io/proptest/proptest/index.html)
([source](https://togithub.com/proptest-rs/proptest)) | dev-dependencies
| minor | `1.4.0` -> `1.5.0` |

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### Release Notes

<details>
<summary>proptest-rs/proptest (proptest)</summary>

###
[`v1.5.0`](https://togithub.com/proptest-rs/proptest/compare/v1.4.0...v1.5.0)

[Compare
Source](https://togithub.com/proptest-rs/proptest/compare/v1.4.0...v1.5.0)

</details>

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