build(deps): bump nodemailer from 6.7.1 to 6.7.8

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.7.1 to 6.7.8.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](nodemailer/nodemailer@v6.7.1...v6.7.8)

---
updated-dependencies:
- dependency-name: nodemailer
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -21,6 +21,6 @@
     "body-parser": "^1.19.0",
     "cors": "^2.8.5",
     "express": "^4.17.2",
-    "nodemailer": "^6.7.1"
+    "nodemailer": "^6.7.8"
   }
 }