Upgrade to MongoDB Driver v6

[mattcollier]

Thanks to @aljones15 for previous work in exploring the driver upgrade.

This implementation:

• Works with and without authentication in the local test suite.
• Works with existing test suites in relying libs without modification to the test framework/config.
• Works with MongoDB Atlas in deployments without any changes to connect strings or config.
• There should be no breaking changes in terms of the connection/authentication.
• There are breaking changes related to the use of various driver APIs
  • The insert APIs no longer return the document that was inserted.

This has been tested with one top level app. I will be plugging it into additional Bedrock libs before release.

[aljones15]

has this been tested for interoperability with the multiple backend libs that use @bedrock/mongodb? the big issue holding up the v4 driver was changes to how the modified results count were returned.

[mattcollier]

@aljones15 the types of changes you mentioned related to driver API return value changes etc will still need to be addressed in relying libs.

[aljones15]

@aljones15 the types of changes you mentioned related to driver API return value changes etc will still need to be addressed in relying libs.

ok well maybe those existing PRs can be revised to work with driver 6. thanks for this PR.