Update cargo_metadata requirement from 0.18 to 0.19

Updates the requirements on [cargo_metadata](https://github.com/oli-obk/cargo_metadata) to permit the latest version.
- [Release notes](https://github.com/oli-obk/cargo_metadata/releases)
- [Changelog](https://github.com/oli-obk/cargo_metadata/blob/main/CHANGELOG.md)
- [Commits](oli-obk/cargo_metadata@0.18.0...0.18.1)

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

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

Cargo.toml

@@ -18,7 +18,7 @@ afl = { version = "0.15" }
 anyhow = { version = "1.0", features = ["backtrace"] }
 assert_cmd = "2.0"
 bitflags = "2.6"
-cargo_metadata = "0.18"
+cargo_metadata = "0.19"
 cast_checks = { version = "0.1" }
 clap = { version = "4.5", features = ["cargo", "derive", "wrap_help"] }
 ctor = "0.2"