Bump mailparser from 3.2.0 to 3.4.0 (#23466)

Bumps [mailparser](https://github.com/nodemailer/mailparser) from 3.2.0 to 3.4.0.
- [Release notes](https://github.com/nodemailer/mailparser/releases)
- [Commits](https://github.com/nodemailer/mailparser/compare/v3.2.0...v3.4.0

)

---
updated-dependencies:
- dependency-name: mailparser
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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