fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NODEMAILER-13378253

Author: snyk-bot

package-lock.json

@@ -90,7 +90,7 @@
     "next-auth": "^4.24.9",
     "next-safe-action": "^7.9.4",
     "next-themes": "^0.3.0",
-    "nodemailer": "^6.9.14",
+    "nodemailer": "^7.0.7",
     "pg": "^8.12.0",
     "postgres": "^3.4.4",
     "posthog-js": "^1.180.0",