update benchmarks

benchmark/lib/ping/v4.js

@@ -0,0 +1,16 @@
+import { createClient } from '@node-redis/client';
+
+export default async (host) => {
+    const client = createClient({ host });
+
+    await client.connect();
+
+    return {
+        benchmark() {
+            return client.ping();
+        },
+        teardown() {
+            return client.disconnect();
+        }
+    };
+};