build(deps): bump pretty_assertions from 1.2.0 to 1.2.1

Bumps [pretty_assertions](https://github.com/colin-kiegel/rust-pretty-assertions) from 1.2.0 to 1.2.1.
- [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@v1.2.0...v1.2.1)

---
updated-dependencies:
- dependency-name: pretty_assertions
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -18,5 +18,5 @@ imgtests = []
 
 [dev-dependencies]
 approx = "0.5.0"
-pretty_assertions = "1.2.0"
+pretty_assertions = "1.2.1"
 env_logger = "0.9.0"