Bump serde from 1.0.206 to 1.0.209

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.206 to 1.0.209.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.206...v1.0.209)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -8,4 +8,4 @@ anyhow = "1.0.86"
 log = "0.4.22"
 rnix = "0.11.0"
 rowan = "0.15.15"
-serde = { version = "1.0.206", features = [ "derive" ] }
+serde = { version = "1.0.209", features = [ "derive" ] }