Bump uuid from 1.3.0 to 1.4.0 in /src/proxy-manager (#3230)

Bumps [uuid](https://github.com/uuid-rs/uuid) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/uuid-rs/uuid/releases)
- [Commits](uuid-rs/uuid@1.3.0...1.4.0)

---
updated-dependencies:
- dependency-name: uuid
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/proxy-manager/Cargo.lock

@@ -29,6 +29,6 @@ tokio = { version = "1.28", features = [
 url = { version = "2.4", features = ["serde"] }
 reqwest-retry = { path = "../agent/reqwest-retry" }
 onefuzz-telemetry = { path = "../agent/onefuzz-telemetry" }
-uuid = { version = "1.3", features = ["serde"] }
+uuid = { version = "1.4", features = ["serde"] }
 log = "0.4"
 tempfile = "3.6.0"