Update Rust crate actix-files to 0.6.9 (#382)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

api/Cargo.lock

@@ -6,7 +6,7 @@ edition = "2021"
 [dependencies]
 actix-web = "4.12.0"
 actix-web-prom = { version = "0.10.0", features = ["process"] }
-actix-files = { version = "0.6.8" }
+actix-files = { version = "0.6.9" }
 actix-service = { version = "2.0.3" }
 actix-http = "3.11.2"
 serde = { version = "1.0.228", features = ["derive"] }