Update pretty_assertions requirement from 0.6.1 to 0.7.1 (#895)

Updates the requirements on [pretty_assertions](https://github.com/colin-kiegel/rust-pretty-assertions) to permit the latest version.
- [Release notes](https://github.com/colin-kiegel/rust-pretty-assertions/releases)
- [Changelog](https://github.com/colin-kiegel/rust-pretty-assertions/blob/main/CHANGELOG.md)
- [Commits](rust-pretty-assertions/rust-pretty-assertions@v0.6.1...v0.7.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

juniper/Cargo.toml

@@ -52,7 +52,7 @@ uuid = { version = "0.8", default-features = false, optional = true }
 
 [dev-dependencies]
 bencher = "0.1.2"
-pretty_assertions = "0.6.1"
+pretty_assertions = "0.7.1"
 serde_json = "1.0.2"
 tokio = { version = "0.2", features = ["macros", "rt-core", "time"] }