Bump nodemailer from 6.4.6 to 6.4.16

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.4.6 to 6.4.16.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](nodemailer/nodemailer@v6.4.6...v6.4.16)

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

Author: dependabot[bot]

package.json

@@ -69,7 +69,7 @@
     "knex": "0.20.13",
     "lodash": "^4.17.19",
     "morgan": "^1.10.0",
-    "nodemailer": "^6.4.6",
+    "nodemailer": "^6.4.16",
     "nodemailer-markdown": "^1.0.3",
     "pg": "^7.18.2",
     "winston": "^3.2.1",

yarn.lock

@@ -6020,10 +6020,10 @@ nodemailer-markdown@^1.0.3:
   dependencies:
     marked "^0.6.2"
 
-nodemailer@^6.4.6:
-  version "6.4.6"
-  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.4.6.tgz#d37f504f6560b36616f646a606894fe18819107f"
-  integrity sha512-/kJ+FYVEm2HuUlw87hjSqTss+GU35D4giOpdSfGp7DO+5h6RlJj7R94YaYHOkoxu1CSaM0d3WRBtCzwXrY6MKA==
+nodemailer@^6.4.16:
+  version "6.4.16"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.4.16.tgz#5cb6391b1d79ab7eff32d6f9f48366b5a7117293"
+  integrity sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ==
 
 nodemon@^1.19.1:
   version "1.19.4"