build(deps): bump tracing-core from 0.1.11 to 0.1.15

Bumps [tracing-core](https://github.com/tokio-rs/tracing) from 0.1.11 to 0.1.15.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-core-0.1.11...tracing-core-0.1.15)

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

Cargo.lock

@@ -1746,9 +1746,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.14"
+version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db63662723c316b43ca36d833707cc93dff82a02ba3d7e354f342682cc8b3545"
+checksum = "4f0e00789804e99b20f12bc7003ca416309d28a6f495d6af58d1e2c2842461b5"
 dependencies = [
  "lazy_static",
 ]