Update tracing-subscriber requirement from 0.2 to 0.3

Updates the requirements on [tracing-subscriber](https://github.com/tokio-rs/tracing) to permit the latest version.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-subscriber-0.2.0...tracing-subscriber-0.3.1)

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

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

wrapper/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 
 [dependencies]
 game =  { version = "0.1", path = "../game"}
-tracing-subscriber = "0.2"
+tracing-subscriber = "0.3"
 tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }
 sentry = "0.23"
 tracing = "0.1"