fix(deps): update dependency nodemailer to v7

Author: renovate[bot]

package-lock.json

@@ -17,7 +17,7 @@
     "morgan": "^1.10.0",
     "multer": "^1.4.5-lts.1",
     "mustache": "^4.2.0",
-    "nodemailer": "^6.6.1",
+    "nodemailer": "^7.0.0",
     "nodemon": "^2.0.7",
     "winston": "^3.3.3",
     "winston-gelf-transporter": "^1.0.2",