Update graphviz-rust requirement from 0.4.0 to 0.5.0 (apache#574)

Updates the requirements on [graphviz-rust](https://github.com/besok/graphviz-rust) to permit the latest version.
- [Release notes](https://github.com/besok/graphviz-rust/releases)
- [Changelog](https://github.com/besok/graphviz-rust/blob/master/CHANGELOG.md)
- [Commits](https://github.com/besok/graphviz-rust/commits)

---
updated-dependencies:
- dependency-name: graphviz-rust
  dependency-type: direct:production
...

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ballista/scheduler/Cargo.toml

@@ -52,7 +52,7 @@ datafusion-proto = "15.0.0"
 etcd-client = { version = "0.10", optional = true }
 flatbuffers = { version = "22.9.29" }
 futures = "0.3"
-graphviz-rust = "0.4.0"
+graphviz-rust = "0.5.0"
 http = "0.2"
 http-body = "0.4"
 hyper = "0.14.4"