Bump nodemailer from 6.9.14 to 7.0.7 in /captcha-server

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.9.14 to 7.0.7.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](nodemailer/nodemailer@v6.9.14...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>

Author: dependabot[bot]

captcha-server/package-lock.json

@@ -16,7 +16,7 @@
     "@grpc/grpc-js": "^1.11.1",
     "@grpc/proto-loader": "^0.7.13",
     "ioredis": "^5.4.1",
-    "nodemailer": "^6.9.14",
+    "nodemailer": "^7.0.7",
     "uuidv4": "^6.2.13"
   }
 }