build(deps): bump config from 0.15.13 to 0.15.15

Bumps [config](https://github.com/rust-cli/config-rs) from 0.15.13 to 0.15.15.
- [Changelog](https://github.com/rust-cli/config-rs/blob/main/CHANGELOG.md)
- [Commits](rust-cli/config-rs@v0.15.13...v0.15.15)

---
updated-dependencies:
- dependency-name: config
  dependency-version: 0.15.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -21,7 +21,7 @@ opt-level = 3
 anyhow = "1.0.98"
 clap = { version = "4.5.41", features = ["derive"] }
 clap-verbosity-flag = "3.0.3"
-config = "0.15.13"
+config = "0.15.15"
 env_logger = "0.11.8"
 git2 = "0.20.2"
 log = "0.4.27"