[chore(cargo)](deps): Bump metrics from 0.21.1 to 0.22.3

Bumps [metrics](https://github.com/metrics-rs/metrics) from 0.21.1 to 0.22.3.
- [Changelog](https://github.com/metrics-rs/metrics/blob/main/release.toml)
- [Commits](metrics-rs/metrics@metrics-v0.21.1...metrics-v0.22.3)

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

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

homestar-runtime/Cargo.toml

@@ -119,7 +119,7 @@ libp2p = { version = "0.53", default-features = false, features = [
 ] }
 libsqlite3-sys = { workspace = true }
 maplit = "1.0"
-metrics = { version = "0.21", default-features = false }
+metrics = { version = "0.22", default-features = false }
 metrics-exporter-prometheus = { version = "0.12.1", default-features = false, features = [
  "http-listener",
 ] }