Bump chrono from 0.4.37 to 0.4.38

Bumps [chrono](https://github.com/chronotope/chrono) from 0.4.37 to 0.4.38.
- [Release notes](https://github.com/chronotope/chrono/releases)
- [Changelog](https://github.com/chronotope/chrono/blob/main/CHANGELOG.md)
- [Commits](chronotope/chrono@v0.4.37...v0.4.38)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -10,7 +10,7 @@ repository = "https://gitlab.collabora.com/lava/lava-gitlab-runner.git"
 
 [dependencies]
 bytes = "1.2.1"
-chrono = { version = "0.4.20", features = ["serde"] }
+chrono = { version = "0.4.38", features = ["serde"] }
 colored = "2"
 gitlab-runner = "0.0.9"
 lava-api = "0.1.2"