build(deps): bump @sendgrid/mail from 7.7.0 to 8.1.1 in /api

Bumps [@sendgrid/mail](https://github.com/sendgrid/sendgrid-nodejs) from 7.7.0 to 8.1.1.
- [Release notes](https://github.com/sendgrid/sendgrid-nodejs/releases)
- [Changelog](https://github.com/sendgrid/sendgrid-nodejs/blob/main/CHANGELOG.md)
- [Upgrade guide](https://github.com/sendgrid/sendgrid-nodejs/blob/main/UPGRADE.md)
- [Commits](sendgrid/sendgrid-nodejs@7.7.0...8.1.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

api/package.json

@@ -27,7 +27,7 @@
   },
   "homepage": "https://github.com/SocexSolutions/agenda-v2/api/#readme",
   "dependencies": {
-    "@sendgrid/mail": "^7.5.0",
+    "@sendgrid/mail": "^8.1.1",
     "@starryinternet/jobi": "^1.1.0",
     "axios": "^1.2.0",
     "cors": "^2.8.5",