Fix: Upgrade Nodemailer to address SMTP command injection vulnerability (#19151)

📄 Summary

This PR upgrades the nodemailer dependency to a secure version (≥ 8.0.4)
to fix a known SMTP command injection vulnerability
(GHSA-c7w3-x93f-qmm8).

🚨 Issue

The current version used in twenty-server (^7.0.11, resolved to 7.0.11 /
7.0.13) is vulnerable to SMTP command injection due to improper
sanitization of the envelope.size parameter.
This could allow CRLF injection, potentially enabling attackers to add
unauthorized recipients to outgoing emails.

🔍 Root Cause

The vulnerability originates from insufficient validation of
user-controlled input in the SMTP envelope, specifically the size field,
which can be exploited via crafted input containing CRLF sequences.

✅ Changes
Upgraded nodemailer to version ^8.0.4
Ensured compatibility with existing email sending logic
Verified that no breaking changes affect current usage

🔐 Security Impact

This update mitigates the risk of:

SMTP command injection
Unauthorized email recipient manipulation
Potential data leakage via crafted email payloads
📎 References
GHSA: GHSA-c7w3-x93f-qmm8
CVE: (see linked report in issue)

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>

package.json

@@ -180,6 +180,7 @@
     "graphql": "16.8.1",
     "type-fest": "4.10.1",
     "typescript": "5.9.2",
+    "nodemailer": "8.0.4",
     "graphql-redis-subscriptions/ioredis": "^5.6.0",
     "@lingui/core": "5.1.2",
     "@types/qs": "6.9.16",