Bump pretty_assertions from 1.3.0 to 1.4.0 in /lang/rust (apache#2327)

Bumps [pretty_assertions](https://github.com/rust-pretty-assertions/rust-pretty-assertions) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/rust-pretty-assertions/rust-pretty-assertions/releases)
- [Changelog](https://github.com/rust-pretty-assertions/rust-pretty-assertions/blob/main/CHANGELOG.md)
- [Commits](rust-pretty-assertions/rust-pretty-assertions@v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: pretty_assertions
  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>

lang/rust/avro/Cargo.toml

@@ -88,5 +88,5 @@ apache-avro-test-helper = { default-features = false, version = "0.15.0", path =
 criterion = { default-features = false, version = "0.4.0" }
 hex-literal = { default-features = false, version = "0.4.1" }
 md-5 = { default-features = false, version = "0.10.5" }
-pretty_assertions = { default-features = false, version = "1.3.0", features = ["std"] }
+pretty_assertions = { default-features = false, version = "1.4.0", features = ["std"] }
 sha2 = { default-features = false, version = "0.10.7" }