Bump config from 0.13.4 to 0.15.8

Bumps [config](https://github.com/rust-cli/config-rs) from 0.13.4 to 0.15.8.
- [Changelog](https://github.com/rust-cli/config-rs/blob/main/CHANGELOG.md)
- [Commits](rust-cli/config-rs@v0.13.4...v0.15.8)

---
updated-dependencies:
- dependency-name: config
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ tower = "0.5.1"
 chrono-tz = "0.10.1"
 serde_json = "1.0"
 reqwest = { version = "0.11.27", features = ["json"] }
-config = "0.13"
+config = "0.15"
 tracing = "0.1.41"
 tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
 dotenv = "0.15.0"