fix(deps): update dependency nodemailer to v6.9.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nodemailer (source)	6.7.8 -> 6.9.8
@types/nodemailer (source)	6.4.5 -> 6.4.14

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Release Notes

nodemailer/nodemailer (nodemailer)

v6.9.8

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Bug Fixes

• punycode: do not use native punycode module (b4d0e0c)

v6.9.7

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Bug Fixes

• customAuth: Do not require user and pass to be set for custom authentication schemes (fixes #​1584) (41d482c)

v6.9.6

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Bug Fixes

• inline: Use 'inline' as the default Content Dispostion value for embedded images (db32c93)
• tests: Removed Node v12 from test matrix as it is not compatible with the test framework anymore (7fe0a60)

v6.9.5

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Bug Fixes

• license: Updated license year (da4744e)

v6.9.4

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• Renamed SendinBlue to Brevo

v6.9.3

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• Specified license identifier (was defined as MIT, actual value MIT-0)
• If SMTP server disconnects with a message, process it and include as part of the response error

v6.9.2

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• Fix uncaught exception on invalid attachment content payload

v6.9.1

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• Fix base64 encoding for emoji bytes in encoded words

v6.9.0

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• Do not throw if failed to resolve IPv4 addresses
• Include EHLO extensions in the send response
• fix sendMail function: callback should be optional

v6.8.0

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• Add DNS timeout (huksley)
• add dns.REFUSED (lucagianfelici)

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