Update dependency nodemailer to v6.9.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nodemailer (source)	6.9.0 -> 6.9.1

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Release Notes

nodemailer/nodemailer

### [`v6.9.1`](https://togithub.com/nodemailer/nodemailer/blob/HEAD/CHANGELOG.md#​691-2023-01-27) [Compare Source](https://togithub.com/nodemailer/nodemailer/compare/v6.9.0...v6.9.1) - Fix base64 encoding for emoji bytes in encoded words

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