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

@@ -11,4 +11,4 @@ futures = "0.3.31"
 lighthouse-client = "5.1.0"
 tokio = { version = "1.44.0", features = ["rt-multi-thread", "macros", "time", "sync"] }
 tracing = "0.1.41"
-tracing-subscriber = { version = "0.3.19", features = ["env-filter", "std"] }
+tracing-subscriber = { version = "0.3.20", features = ["env-filter", "std"] }