Bump nodemailer and mailparser

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) and [mailparser](https://github.com/nodemailer/mailparser). These dependencies needed to be updated together.

Updates `nodemailer` from 6.9.7 to 6.9.9
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](nodemailer/nodemailer@v6.9.7...v6.9.9)

Updates `mailparser` from 3.6.5 to 3.6.7
- [Release notes](https://github.com/nodemailer/mailparser/releases)
- [Changelog](https://github.com/nodemailer/mailparser/blob/master/CHANGELOG.md)
- [Commits](nodemailer/mailparser@v3.6.5...v3.6.7)

---
updated-dependencies:
- dependency-name: nodemailer
  dependency-type: indirect
- dependency-name: mailparser
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>