build(deps): bump tracing from 0.1.35 to 0.1.40 (#371)

Bumps [tracing](https://github.com/tokio-rs/tracing) from 0.1.35 to 0.1.40.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](tokio-rs/tracing@tracing-0.1.35...tracing-0.1.40)

---
updated-dependencies:
- dependency-name: tracing
  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>
Co-authored-by: Noah Kennedy <nkennedy@cloudflare.com>

boringtun-cli/Cargo.toml

@@ -11,7 +11,7 @@ edition = "2021"
 [dependencies]
 daemonize = "0.4.1"
 clap = { version = "3.1.6", features = ["env"] }
-tracing = "0.1.31"
+tracing = "0.1.40"
 tracing-subscriber = "0.3.9"
 tracing-appender = "0.2.1"
 

boringtun/Cargo.toml

@@ -26,7 +26,7 @@ hex = "0.4"
 untrusted = "0.9.0"
 libc = "0.2"
 parking_lot = "0.12"
-tracing = "0.1.29"
+tracing = "0.1.40"
 tracing-subscriber = { version = "0.3", features = ["fmt"], optional = true }
 ip_network = "0.4.1"
 ip_network_table = "0.2.0"