Bump actix-cors from 0.6.1 to 0.6.4

Bumps [actix-cors](https://github.com/actix/actix-extras) from 0.6.1 to 0.6.4.
- [Release notes](https://github.com/actix/actix-extras/releases)
- [Commits](actix/actix-extras@cors-v0.6.1...cors-v0.6.4)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -13,7 +13,7 @@ actix-files = "0.6.1"
 clap = "3.0.0-beta.4"
 serde_json = "1.0.91"
 serde = "1.0.143"
-actix-cors = "0.6.1"
+actix-cors = "0.6.4"
 ts-rs = { git = "https://github.com/Aleph-Alpha/ts-rs", branch = "main", features = [
     "serde-compat",
 ] }