Bump serde from 1.0.206 to 1.0.208
Bumps [serde](https://github.com/serde-rs/serde) from 1.0.206 to 1.0.208.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.206...v1.0.208)
---
updated-dependencies:
- dependency-name: serde
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <[email protected]>