Bump tracing-subscriber from 0.3.19 to 0.3.20

Bumps [tracing-subscriber](https://github.com/tokio-rs/tracing) from 0.3.19 to 0.3.20.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](tokio-rs/tracing@tracing-subscriber-0.3.19...tracing-subscriber-0.3.20)

---
updated-dependencies:
- dependency-name: tracing-subscriber
  dependency-version: 0.3.20
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.lock

@@ -23,7 +23,7 @@ tokio = { version = "1", features = ["full", "time"] }
 serde = { version = "1.0", features = ["derive"] }
 async-trait = "0.1"
 tracing = "0.1"
-tracing-subscriber = "0.3.19"
+tracing-subscriber = "0.3.20"
 
 [dev-dependencies]
 cargo-husky = { version = "1", features = ["precommit-hook", "run-cargo-test", "run-cargo-clippy", "run-cargo-fmt"] }