Bump petgraph from 0.7.0 to 0.7.1 (#355)

Bumps [petgraph](https://github.com/petgraph/petgraph) from 0.7.0 to 0.7.1.
- [Changelog](https://github.com/petgraph/petgraph/blob/master/RELEASES.rst)
- [Commits](https://github.com/petgraph/petgraph/compare/[email protected]@v0.7.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ thiserror = "2.0"
 lazy_static = "1.5.0"
 
 [dependencies.petgraph]
-version = "0.7.0"
+version = "0.7.1"
 features =  [ "serde-1" ]
 
 [dependencies.chrono]