Upgrade mongodb to 2.0

pushed to dev upgrade to 8.4 and 8.5

Pulling note in from Slack:

I recommended evaluate including both versions of the package on the images (since these are PHP Extensions this should be fairly straight forward) and possibly add a helper script to allow switching versions.

DDEV does similar in its image design that all the versions of PHP are present and a script sets the active version.

I will note that this is an example of what #3404082: Adopt (semver) versioning for DrupalCi images → is trying to address.

Major changes to the CI images that are hard for contrib to work with should generally not be done to existing images without some way to differentiate them. Including both versions and allowing a test run to 'opt in' to the newer version would better align with having well designed and versioned images.

updated 8.3 image as contrib module's CI is broken anyway

added to summary https://www.mongodb.com/community/forums/t/php-mongodb-2-0-0-bsonarray-b...