Database Migration: PostgreSQL 15 Support
Full support for PostgreSQL 15 with improved performance and new features

Our authentication system now fully supports PostgreSQL 15, bringing significant improvements to performance and reliability.
Key benefits:
- 15% faster query performance
- Improved JSON/JSONB operations
- Enhanced security features
- Better parallel query execution
Migration notes:
- Zero-downtime migration supported
- Backward compatibility maintained
- New index optimization
- Updated connection pooling
The migration ensures better scalability and performance for growing authentication workloads.