chore(deps): update dependency @types/nodemailer to v7

Author: renovate[bot]

packages/backend/package.json

@@ -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": "7.0.1",
     "@types/supertest": "2.0.12",
     "@typescript-eslint/eslint-plugin": "4.33.0",
     "@typescript-eslint/parser": "4.33.0",