Upgrade MongoDB deployment to v5

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Procedure was as follows:

Start with an initial backup.

Check that the compatibility version is at 4.4:

npx mup ... mongo shell
> db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } )
...

Replace version: 4.4 by version: 5.0 for the mongo entry in mup.js and run npx mup ... setup.

Make an intermediary backup.

Set compatibility version to 5.0:

npx mup ... mongo shell
> db.adminCommand( { setFeatureCompatibilityVersion: "5.0" } )
...

End with a final backup.

See also:

• https://www.mongodb.com/docs/manual/release-notes/5.0-upgrade-standalone/
• https://meteor-up.com/docs.html#change-mongodb-version