Update redis requirement from 0.26 to 0.27 (#169)

Cargo.toml

@@ -35,7 +35,7 @@ futures = "0.3"
 futures-util = "0.3"
 jsonwebtoken = {version = "9.0", optional = true}
 rand = {version = "0.8", optional = true}
-redis = {version = "0.26", features = ["tokio-comp"], optional = true}
+redis = {version = "0.27", features = ["tokio-comp"], optional = true}
 reqwest = {version = "0.12", features = ["json", "multipart", "stream"]}
 serde = {version = "1.0", features = ["derive"]}
 serde_json = "1.0"