build: bump proptest from 1.4.0 to 1.5.0

Bumps [proptest](https://github.com/proptest-rs/proptest) from 1.4.0 to 1.5.0.
- [Release notes](https://github.com/proptest-rs/proptest/releases)
- [Changelog](https://github.com/proptest-rs/proptest/blob/master/CHANGELOG.md)
- [Commits](proptest-rs/proptest@v1.4.0...v1.5.0)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -17,4 +17,4 @@ tracing = "0.1"
 [dev-dependencies]
 insta = "1"
 maplit = "1"
-proptest = "1.4.0"
+proptest = "1.5.0"