mongodb 4.2.0 support

[bizob2828]

mongodb 4.2.0 dropped support for v2 of mongodb server. Min Supported Versions. Our versioned tests spin up a v2 of mongodb server. This fails with

MongoServerSelectionError: Server at localhost:27017 reports maximum wire version 2, but this version of the Node.js Driver requires at least 6 (MongoDB 3.6)
    at Timeout._onTimeout (/Users/revans/code/node-newrelic/test/versioned/mongodb/node_modules/mongodb/src/sdam/topology.ts:623:30)
    at listOnTimeout (node:internal/timers:557:17)
    at processTimers (node:internal/timers:500:7)

We need to investigate which minimum version of mongodb server we can support and update the versioned tests stanza accordingly. If we still want to support an unsupported version of mongodb server we could spin up multiple mongo containers and update tests accordingly