chore: Bump rocket from 0.5.0-rc.3 to 0.5.0-rc.4

Bumps [rocket](https://github.com/SergioBenitez/Rocket) from 0.5.0-rc.3 to 0.5.0-rc.4.
- [Release notes](https://github.com/SergioBenitez/Rocket/releases)
- [Changelog](https://github.com/SergioBenitez/Rocket/blob/v0.5.0-rc.4/CHANGELOG.md)
- [Commits](rwf2/Rocket@v0.5.0-rc.3...v0.5.0-rc.4)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -8,7 +8,7 @@ version = "0.2.14"
 
 [dependencies]
 rand = "0.8.5"
-rocket = {version = "0.5.0-rc.3", features = ["json"]}
+rocket = {version = "0.5.0-rc.4", features = ["json"]}
 serde = {version = "1.0.190", features = ["derive"]}
 serde_json = "1.0.108"
 uuid = {version = "1.5.0", features = ["v4"]}