feat(NODE-5398): use mongodb-js/saslprep instead of saslprep

[baileympearson]

Description

What is changing?

@mongodb-js/saslprep has replaced saslprep as the optional dependency our driver users on for SCRAM-SHA-256 authentication.

Is there new documentation needed for these changes?

What is the motivation for this change?

Release Highlight

mongodb-js/saslprep is now installed by default

Until v6, the driver included the saslprep package as an optional dependency for SCRAM-SHA-256 authentication. saslprep breaks when bundled with webpack because it attempted to read a file relative to the package location and consequently the driver would throw errors when using SCRAM-SHA-256 if it were bundled.

The driver now depends on mongodb-js/saslprep, a fork of saslprep that can be bundled with webpack because it includes the necessary saslprep data in memory upon loading. This will be installed by default but will only be used if SCRAM-SHA-256 authentication is used.

Double check the following

• Ran npm run check:lint script
• Self-review completed using the steps outlined here
• PR title follows the correct format: type(NODE-xxxx)[!]: description
  • Example: feat(NODE-1234)!: rewriting everything in coffeescript
• Changes are covered by tests
• New TODOs have a related JIRA ticket

[durran]

https://spruce.mongodb.com/version/64de2471850e6178dd748a94/tasks?sorts=STATUS%3AASC%3BBASE_STATUS%3ADESC