Update pretty_assertions requirement from 0.6 to 0.7

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@v0.6.0...v0.7.1)

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -39,7 +39,7 @@ jsonl = ["serde", "serde_json"]
 
 [dev-dependencies]
 anyhow = "1.0.34"
-pretty_assertions = "0.6"
+pretty_assertions = "0.7"
 # Optional dev-dependencies are not a thing :(
 serde_derive = "1.0"
 tempfile = "3.0"