Update tracing-subscriber when ansi_term alternative is chosen

[cdata]

A security alert has been issued (https://github.com/subconsciousnetwork/noosphere/security/dependabot/2) related to a transitive Rust dependency of ours: ansi_term. The crate is apparently unmaintained.

We inherit a dependency on it through the tracing-subscriber crate. An alternative will eventually be chosen by them, and then we can inherit the choice. Track https://github.com/tokio-rs/tracing/issues/2282 and update our dependency as the issue is resolved.