fix: api/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NODEMAILER-14157156

Author: snyk-io[bot]

api/package.json

@@ -91,7 +91,7 @@
     "multer": "^2.0.1",
     "nanoid": "^3.3.7",
     "node-fetch": "^2.7.0",
-    "nodemailer": "^6.9.15",
+    "nodemailer": "^7.0.11",
     "ollama": "^0.5.0",
     "openai": "^4.96.2",
     "openai-chat-tokens": "^0.2.8",