build(deps): bump @sendgrid/mail from 6.5.5 to 7.4.5 (#722)

Bumps [@sendgrid/mail](https://github.com/sendgrid/sendgrid-nodejs) from 6.5.5 to 7.4.5.
- [Release notes](https://github.com/sendgrid/sendgrid-nodejs/releases)
- [Changelog](https://github.com/sendgrid/sendgrid-nodejs/blob/main/CHANGELOG.md)
- [Commits](sendgrid/sendgrid-nodejs@6.5.5...7.4.5)

---
updated-dependencies:
- dependency-name: "@sendgrid/mail"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]