fix(deps): update dependency nodemailer to v7

Author: renovate[bot]

packages/backend/package.json

@@ -86,7 +86,7 @@
     "mongodb": "4.12.1",
     "mongoose": "5.13.15",
     "node-config-ts": "3.1.0",
-    "nodemailer": "6.8.0",
+    "nodemailer": "7.0.9",
     "pupa": "2.1.1",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
@@ -108,7 +108,7 @@
     "@types/jsonwebtoken": "8.5.9",
     "@types/migrate-mongo": "8.1.3",
     "@types/node": "14.18.34",
-    "@types/nodemailer": "6.4.6",
+    "@types/nodemailer": "7.0.2",
     "@types/supertest": "2.0.12",
     "@typescript-eslint/eslint-plugin": "4.33.0",
     "@typescript-eslint/parser": "4.33.0",