Bump serde from 1.0.198 to 1.0.199 in /lang/rust (#2882)

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.198 to 1.0.199.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.198...v1.0.199)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit 998b2aba733db6e70e57884e98cb81b4f28bd4a4)
4 files changed