GHSA-mwxm-35f8-6vg2: Vanna vulnerable to SQL Injection

vanna-ai/vanna version v0.3.4 is vulnerable to SQL injection in some file-critical functions such as pg_read_file(). This vulnerability allows unauthenticated remote users to read arbitrary local files on the victim server, including sensitive files like /etc/passwd, by exploiting the exposed SQL queries via a Python Flask API.