Update dependency nodemailer to v6.9.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nodemailer (source)	6.8.0 -> 6.9.0

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Release Notes

nodemailer/nodemailer

### [`v6.9.0`](https://togithub.com/nodemailer/nodemailer/blob/HEAD/CHANGELOG.md#​690-2023-01-12) [Compare Source](https://togithub.com/nodemailer/nodemailer/compare/v6.8.0...v6.9.0) - Do not throw if failed to resolve IPv4 addresses - Include EHLO extensions in the send response - fix sendMail function: callback should be optional

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