RedisVectorStore does not properly close Jedis pipelines

[Bragolgirith]

The RedisVectorStore #add and #delete methods retrieve a Jedis Pipeline (which is Closable), but never call the #close method.
Multiple calls to RedisVectorStore#add thus eventually exhaust all available pool resources and lead to an exception:

Exception encountered during context initialization - cancelling refresh attempt: redis.clients.jedis.exceptions.JedisException: Could not get a resource from the pool