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] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -20,4 +20,4 @@ name = "error"
 path = "src/error.rs"
 
 [dependencies]
-tracing-subscriber = "0.3.19"
+tracing-subscriber = "0.3.20"