upgrade mongodb to 5.0

[longrunningprocess]

Is your feature request related to a problem? Please describe.

There is a desire to utilize aggregation pipelines and take advantage of possible perf improvements.

Additional context
https://www.mongodb.com/docs/v5.0/release-notes/4.4-upgrade-standalone/

see #1567 for history of upgrades so far

• verify mongodb PECL extension is recent enough
• verify mongodb PHP library (composer) is recent enough
• verify compatibility version is set to 4.4 initially
• verify clean mongod service shutdown
• take a volume snapshot before upgrading
• setFeatureCompatibilityVersion: "5.0" for every db

[megahirt]

Thanks for this! Let's plan to upgrade to 5.0 sometime in the second half of November. That should allow 4.4 to run in production a few weeks to make sure there are no issues before going up again.

[megahirt]

The upgrade guide from 4.4 -> 5.0 is here: https://www.mongodb.com/docs/v5.0/release-notes/5.0-upgrade-standalone/

[megahirt]

We need to verify the PECL extension and composer library are compatible with MongoDB 5.0. See this table: https://www.mongodb.com/docs/drivers/php/#compatibility-table-legend

[megahirt]

Also, it looks like we need to run

db.adminCommand( { setFeatureCompatibilityVersion: "5.0" } ) 

on every database after the container has been upgraded.

They also make mention of ensuring that mongodb 4.4 has a clean shutdown...not sure how we can verify that or not