feat: for postgresql DatabaseService create engine set default utc timezone

[jeevic]

this feature DatabaseService create postgresql engine set default utc timezone

add code：

# For PostgreSQL, set the timezone to UTC
        if settings.database_url and settings.database_url.startswith("postgresql"):
            return {"options": "-c timezone=utc"}

Summary by CodeRabbit

• New Features
  • PostgreSQL database connections are now automatically configured to use the UTC timezone.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud