Update cargo_metadata requirement from 0.19.1 to 0.20.0

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@0.19.1...0.20.0)

---
updated-dependencies:
- dependency-name: cargo_metadata
  dependency-version: 0.20.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -33,7 +33,7 @@ tzdb = { version = "0.7.2", optional = true, default-features = false, features
 
 document-features = { version = "0.2", optional = true }
 
-cargo_metadata = { version = "0.19.1", optional = true, default-features = false }
+cargo_metadata = { version = "0.20.0", optional = true, default-features = false }
 serde_json = { version = "1", default-features = false, optional = true }
 
 [features]