Bump email_spec to 2.1.1
Bump email_spec to 2.1.1

Bumps [email_spec](https://github.com/email-spec/email-spec) from 2.1.0 to 2.1.1.
- [Changelog](https://github.com/email-spec/email-spec/blob/master/Changelog.md)
- [Commits](https://github.com/email-spec/email-spec/compare/v2.1.0...v2.1.1)
openpolitics/votebot,openpolitics/votebot,openpolitics/votebot