chore(deps): bump nodemailer from 6.9.16 to 7.0.7

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.9.16 to 7.0.7.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodemailer/nodemailer/compare/v6.9.16...v7.0.7)

---
updated-dependencies:
- dependency-name: nodemailer
  dependency-version: 7.0.7
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

plugins/notifications-backend-module-email/package.json

@@ -48,7 +48,7 @@
     "@backstage/plugin-notifications-node": "workspace:^",
     "@backstage/types": "workspace:^",
     "lodash": "^4.17.21",
-    "nodemailer": "^6.9.13",
+    "nodemailer": "^7.0.7",
     "p-throttle": "^4.1.1"
   },
   "devDependencies": {