docs: Mention Dragonfly support

Author: luin

README.md

@@ -8,7 +8,7 @@
 
 A robust, performance-focused and full-featured [Redis](http://redis.io) client for [Node.js](https://nodejs.org).
 
-Supports Redis >= 2.6.12 and (Node.js >= 12.22.0). Completely compatible with Redis 7.x.
+Supports Redis >= 2.6.12 and the latest version of [Dragonfly](https://dragonflydb.io/). Completely compatible with Redis 7.x.
 
 # Features