Bump clap-verbosity-flag from 3.0.2 to 3.0.3 in /backend

Bumps [clap-verbosity-flag](https://github.com/clap-rs/clap-verbosity-flag) from 3.0.2 to 3.0.3.
- [Changelog](https://github.com/clap-rs/clap-verbosity-flag/blob/master/CHANGELOG.md)
- [Commits](https://github.com/clap-rs/clap-verbosity-flag/compare/v3.0.2...v3.0.3)

---
updated-dependencies:
- dependency-name: clap-verbosity-flag
  dependency-version: 3.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

backend/sync_server/Cargo.toml

@@ -35,7 +35,7 @@ regex = "1.11.1"
 clap = { version = "4.5.38", features = ["derive"] }
 futures = "0.3.31"
 serde_json = "1.0.140"
-clap-verbosity-flag = "3.0.2"
+clap-verbosity-flag = "3.0.3"
 
 [lints]
 workspace = true