Bump tracing from 0.1.29 to 0.1.30

Bumps [tracing](https://github.com/tokio-rs/tracing) from 0.1.29 to 0.1.30.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-0.1.29...tracing-0.1.30)

---
updated-dependencies:
- dependency-name: tracing
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

plume-models/Cargo.toml

@@ -30,7 +30,7 @@ shrinkwraprs = "0.3.0"
 diesel-derive-newtype = "0.1.2"
 glob = "0.3.0"
 lindera-tantivy = { version = "0.7.1", optional = true }
-tracing = "0.1.22"
+tracing = "0.1.30"
 riker = "0.4.2"
 once_cell = "1.5.2"
 lettre = "0.9.6"