chore(deps): bump actix-web in /reference-apps/rust (#103)

Bumps [actix-web](https://github.com/actix/actix-web) from 4.12.0 to 4.12.1.
- [Release notes](https://github.com/actix/actix-web/releases)
- [Changelog](https://github.com/actix/actix-web/blob/main/CHANGES.md)
- [Commits](actix/actix-web@web-v4.12.0...web-v4.12.1)

---
updated-dependencies:
- dependency-name: actix-web
  dependency-version: 4.12.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

reference-apps/rust/Cargo.lock

@@ -4,7 +4,7 @@ version = "1.1.0"
 edition = "2021"
 
 [dependencies]
-actix-web = "4.4"
+actix-web = "4.12"
 actix-cors = "0.7"
 tokio = { version = "1.35", features = ["full"] }
 serde = { version = "1.0", features = ["derive"] }