Fix redis healthcheck

Author: p1gp1g

Cargo.lock

@@ -59,7 +59,7 @@ grpcio = { version = "=0.13.0", features = ["openssl"], optional = true }
 grpcio-sys = { version = "=0.13.0", optional = true }
 protobuf = { version = "=2.28.0", optional = true } # grpcio does not support protobuf 3+
 form_urlencoded = { version = "1.2", optional = true }
-redis = { version = "0.27.6", features = ["aio", "tokio-comp"]}
+redis = { version = "0.28.1", features = ["aio", "tokio-comp"]}
 
 [dev-dependencies]
 mockito = "0.31"

autopush-common/Cargo.toml

@@ -503,7 +503,8 @@ impl DbClient for RedisClientImpl {
     }
 
     async fn health_check(&self) -> DbResult<bool> {
-        let _ = self.connection().await?;
+        let mut con = self.connection().await?;
+        let _: () = con.ping().await?;
         Ok(true)
     }