chore(deps): bump serde in the cargo-dependencies group

Bumps the cargo-dependencies group with 1 update: [serde](https://github.com/serde-rs/serde).


Updates `serde` from 1.0.215 to 1.0.216
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.215...v1.0.216)

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

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

Cargo.toml

@@ -18,7 +18,7 @@ figment = { version = "0.10.19", features = ["env", "toml"] }
 himalaya = { version = "1.0.0" }
 pimalaya-tui = { version = "0.2.1", features = ["keyring", "config"] }
 ratatui = "0.29.0"
-serde = "1.0.215"
+serde = "1.0.216"
 serde_with = "3.11.0"
 tokio = { version = "1.42.0", features = ["rt-multi-thread"] }
 toml = "0.8.19"