Bump metrics from 0.21.1 to 0.22.0

Bumps [metrics](https://github.com/metrics-rs/metrics) from 0.21.1 to 0.22.0.
- [Changelog](https://github.com/metrics-rs/metrics/blob/main/release.toml)
- [Commits](metrics-rs/metrics@metrics-v0.21.1...metrics-v0.22.0)

---
updated-dependencies:
- dependency-name: metrics
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ telemetry-batteries = { git = "https://github.com/worldcoin/telemetry-batteries.
 tokio = { version = "1.35.1", features = ["macros"] }
 tracing = "0.1.40"
 tracing-subscriber = "0.3.18"
-metrics = "0.21.1"
+metrics = "0.22.0"
 serde = { version = "1.0.195", features = ["derive"] }
 
 [[bin]]