build(deps): bump serde from 1.0.215 to 1.0.216

Bumps [serde](https://github.com/serde-rs/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
...

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

Cargo.toml

@@ -23,7 +23,7 @@ reqwest = { version = "0.12.9", features = [
     "gzip",
     "deflate"
 ] }
-serde = "1.0.215"
+serde = "1.0.216"
 serde_json = "1.0.133"
 html2md = "0.2.13"
 env_logger = "0.11.5"