Bump nodemailer from 6.9.1 to 6.9.9

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.9.1 to 6.9.9.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](nodemailer/nodemailer@v6.9.1...v6.9.9)

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

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

yarn.lock

@@ -2299,9 +2299,9 @@ nodemailer-express-handlebars@^5.0.0:
     express-handlebars "^6.0.0"
 
 nodemailer@^6.8.0:
-  version "6.9.1"
-  resolved "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.1.tgz"
-  integrity sha512-qHw7dOiU5UKNnQpXktdgQ1d3OFgRAekuvbJLcdG5dnEo/GtcTHRYM7+UfJARdOFU9WUQO8OiIamgWPmiSFHYAA==
+  version "6.9.9"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.9.9.tgz#4549bfbf710cc6addec5064dd0f19874d24248d9"
+  integrity sha512-dexTll8zqQoVJEZPwQAKzxxtFn0qTnjdQTchoU6Re9BUUGBJiOy3YMn/0ShTW6J5M0dfQ1NeDeRTTl4oIWgQMA==
 
 normalize-path@^3.0.0:
   version "3.0.0"