Update Rust crate tracing-subscriber to 0.2.25 (#39)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

conduit-router/Cargo.toml

@@ -15,4 +15,4 @@ tracing = "0.1.28"
 [dev-dependencies]
 conduit-test = { version = "0.9.0-alpha.5", path = "../conduit-test" }
 lazy_static = "1.4.0"
-tracing-subscriber = "0.2.24"
+tracing-subscriber = "0.2.25"