Bump phpmailer/phpmailer from 5.2.23 to 5.2.28
Bump phpmailer/phpmailer from 5.2.23 to 5.2.28

Bumps [phpmailer/phpmailer](https://github.com/PHPMailer/PHPMailer) from 5.2.23 to 5.2.28.
- [Release notes](https://github.com/PHPMailer/PHPMailer/releases)
- [Changelog](https://github.com/PHPMailer/PHPMailer/blob/v5.2.28/changelog.md)
- [Commits](https://github.com/PHPMailer/PHPMailer/compare/v5.2.23...v5.2.28)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
barak-framework/barak,barak-framework/barak,barak-framework/barak