Merge pull request #25 from Anik7303/dependabot/npm_and_yarn/18.-Understanding-Validation/nodemailer-6.4.16

Bump nodemailer from 6.4.6 to 6.4.16 in /18. Understanding Validation

Author: Anik7303

18. Understanding Validation/package-lock.json

@@ -34,7 +34,7 @@
     "express-validator": "^6.4.0",
     "mongodb": "^3.5.5",
     "mongoose": "^5.9.6",
-    "nodemailer": "^6.4.6"
+    "nodemailer": "^6.4.16"
   },
   "devDependencies": {
     "nodemon": "^2.0.2"