chore(deps): update vergen requirement from 8 to 9

Updates the requirements on [vergen](https://github.com/rustyhorde/vergen) to permit the latest version.
- [Release notes](https://github.com/rustyhorde/vergen/releases)
- [Commits](https://github.com/rustyhorde/vergen/commits)

---
updated-dependencies:
- dependency-name: vergen
  dependency-type: direct:production
...

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

Cargo.toml

@@ -76,7 +76,7 @@ handlebars = "5.1.0"
 serde_json = "1.0.1"
 
 [build-dependencies]
-vergen = { version = "8", features = ["build", "git", "gitcl"] }
+vergen = { version = "9", features = ["build", "git", "gitcl"] }
 
 [[bench]]
 name = "recursive-snark"