chore(deps): bump serde from 1.0.209 to 1.0.214

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.209 to 1.0.214.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.209...v1.0.214)

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

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

Cargo.toml

@@ -9,7 +9,7 @@ description = "A multiplayer geography game inspired by Posio"
 socketioxide = {version = "0.14.1", features=["extensions", "state"]}
 tokio = {version = "1.40.0", features=["full"]}
 tower-http = {version = "0.6.1", features=["cors", "fs", "timeout"]}
-serde = {version = "1.0.209", features=["derive"]}
+serde = {version = "1.0.214", features=["derive"]}
 rand = {version = "0.8.5", features=["std_rng"]}
 axum = "0.7.5"
 serde_json = "1.0.127"