Bump tracing-subscriber from 0.2.17 to 0.2.18

Bumps [tracing-subscriber](https://github.com/tokio-rs/tracing) from 0.2.17 to 0.2.18.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-subscriber-0.2.17...tracing-subscriber-0.2.18)

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

Cargo.lock

@@ -2446,9 +2446,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-subscriber"
-version = "0.2.17"
+version = "0.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "705096c6f83bf68ea5d357a6aa01829ddbdac531b357b45abeca842938085baa"
+checksum = "aa5553bf0883ba7c9cbe493b085c29926bd41b66afc31ff72cf17ff4fb60dcd5"
 dependencies = [
  "ansi_term",
  "chrono",

Cargo.toml

@@ -33,7 +33,7 @@ tracing-actix-web = "0.2.1"
 tracing-bunyan-formatter = "0.2.0"
 tracing-futures = "0.2.5"
 tracing-log = "0.1.2"
-tracing-subscriber = { version = "0.2.17", features = ["registry", "env-filter"] }
+tracing-subscriber = { version = "0.2.18", features = ["registry", "env-filter"] }
 
 [build-dependencies]
 ructe = "0.13.2"