build(deps): bump tracing-subscriber from 0.3.3 to 0.3.4 (#1421)

Bumps [tracing-subscriber](https://github.com/tokio-rs/tracing) from 0.3.3 to 0.3.4.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](tokio-rs/tracing@tracing-subscriber-0.3.3...tracing-subscriber-0.3.4)

---
updated-dependencies:
- dependency-name: tracing-subscriber
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit f0bd122)
Signed-off-by: Oliver Gould <ver@buoyant.io>

Author: dependabot[bot]

Cargo.lock

@@ -2365,9 +2365,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-subscriber"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "245da694cc7fc4729f3f418b304cb57789f1bed2a78c575407ab8a23f53cb4d3"
+checksum = "d5e6136799e1079699e0d9784c883e03af55cf6a1bee48fe1d79ca552c1bc36f"
 dependencies = [
  "ansi_term",
  "lazy_static",