fix: Fixed typeorm mongodb health check fails with mongodb>=5.0

[supaflyENJOY]

PR Checklist

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• The commit message follows our guidelines: https://github.com/nestjs/terminus/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

If you try to run a health check for TypeORM with type: 'mongodb' with mongodb >= 5.0 you will always get an error:
{"status":"error","info":{},"error":{"database":{"status":"down","message":"timeout of 5000ms exceeded"}},"details":{"database":{"status":"down","message":"timeout of 5000ms exceeded"}}}
It happens because in the MongoDB module callback API has been removed. You can read more here.

What is the new behavior?

With this small fix health check passes

Does this PR introduce a breaking change?

• Yes
• No

Other information

[supaflyENJOY]

It looks like this issue was also mentioned here

[BrunnerLivio]

Thanks!

[BrunnerLivio]

Released with v10.2.0 🎉