refactor(redis): DEL -> UNLINK

This is beneficial since unlink is non blocking, it will run in a different thread if the data passed is large
https://redis.io/commands/unlink/

Signed-off-by: Akhil Narang <me@akhilnarang.dev>

frappe/utils/redis_wrapper.py

@@ -144,7 +144,7 @@ class RedisWrapper(redis.Redis):
 			frappe.local.cache.pop(key, None)
 
 		try:
-			self.delete(*keys)
+			self.unlink(*keys)
 		except redis.exceptions.ConnectionError:
 			pass