node-v1.2.3

The MongoDB Node.js team is pleased to announce version 1.2.3 of the mongodb-client-encryption package.

This patch contains a fix for automatic client side encryption that needs to perform metadata look ups like listCollections.
In situations where the connection pool size is constrained or in full use it can be impossible for an operation of this kind to proceed.
Adding a separate client only in such a situation permits the metadata operations to proceed.