Bump nodemailer from 6.7.1 to 6.9.1

[dependabot[bot]]

Bumps nodemailer from 6.7.1 to 6.9.1.

Changelog

Sourced from nodemailer's changelog.

6.9.1 2023-01-27

• Fix base64 encoding for emoji bytes in encoded words

6.9.0 2023-01-12

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

6.8.0 2022-09-28

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

6.7.8 2022-08-11

• Allow to use multiple Reply-To addresses

6.7.7 2022-07-06

• Resolver fixes

6.7.5 2022-05-04

• No changes, pushing a new README to npmjs.org

6.7.4 2022-04-29

• Ensure compatibility with Node 18
• Replaced Travis with Github Actions

6.7.3 2022-03-21

• Typo fixes
• Added stale issue automation fir Github
• Add Infomaniak config to well known service (popod)
• Update Outlook/Hotmail host in well known services (popod)
• fix: DSN recipient gets ignored (KornKalle)

6.7.2 2021-11-26

• Fix proxies for account verification

Commits

• e3cc93a v6.9.1
• 01840df Updated examples
• 072e1aa fixed tests
• 2463203 v6.9.0
• 8a2acdd fix sendMail function: callback should be optional (#1490)
• b5ab28e Updated README
• 0a22b61 v6.8.0
• e091992 Add DNS timeout (#1468)
• 0a52eeb #1459 Add a failing test for attachments with null content (#1466)
• 6f40536 add dns.REFUSED (#1458)
• Additional commits viewable in compare view

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