Bump actix-web from 4.0.1 to 4.2.1

Bumps [actix-web](https://github.com/actix/actix-web) from 4.0.1 to 4.2.1.
- [Release notes](https://github.com/actix/actix-web/releases)
- [Changelog](https://github.com/actix/actix-web/blob/master/CHANGES.md)
- [Commits](https://github.com/actix/actix-web/compare/web-v4.0.1...web-v4.2.1)

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

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

Cargo.toml

@@ -19,7 +19,7 @@ serde = { version = "1.0", features = ["derive"] }
 rand = { version = "0.8" }
 gpw = "0.1"
 actix = "0.13"
-actix-web = "4.0"
+actix-web = "4.2"
 htmlescape = "0.3"
 askama = "0.11"
 bat = "0.20"