chore(deps): bump config from 0.15.8 to 0.15.9

Bumps [config](https://github.com/rust-cli/config-rs) from 0.15.8 to 0.15.9.
- [Changelog](https://github.com/rust-cli/config-rs/blob/main/CHANGELOG.md)
- [Commits](rust-cli/config-rs@v0.15.8...v0.15.9)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -17,7 +17,7 @@ keywords = ["wallpaper", "wallpaper-changer"]
 anyhow = "1.0.97"
 clap = "4.5.31"
 clap_derive = "4.5.28"
-config = "0.15.8"
+config = "0.15.9"
 daemonize = "0.5.0"
 home = "0.5.11"
 rand = "0.9.0"