build(deps): bump mailparser from 3.5.0 to 3.6.0

Bumps [mailparser](https://github.com/nodemailer/mailparser) from 3.5.0 to 3.6.0.
- [Release notes](https://github.com/nodemailer/mailparser/releases)
- [Commits](nodemailer/mailparser@v3.5.0...v3.6.0)

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

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Author: dependabot[bot]