Bump MailKit from 2.0.6 to 2.0.7 in /src/Miningcore (#451)
Bump MailKit from 2.0.6 to 2.0.7 in /src/Miningcore (#451)

Bumps [MailKit](https://github.com/jstedfast/MailKit) from 2.0.6 to 2.0.7.
- [Release notes](https://github.com/jstedfast/MailKit/releases)
- [Changelog](https://github.com/jstedfast/MailKit/blob/master/ReleaseNotes.md)
- [Commits](https://github.com/jstedfast/MailKit/compare/2.0.6...2.0.7)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
coinfoundry/miningcore,coinfoundry/miningcore,coinfoundry/miningcore,coinfoundry/miningcore