Steps to reproduce synchronization bug (typeorm/typeorm#7992)

• Run the app by providing 2 env variables - DB_USERNAME and DB_PASSWORD for postgres db connection. Make sure test DB exists in postgres.
• In first run it'll create test table with columns id, col1 and col2.
• Now if you add another column col3 (of any type) in entites/test.ts Typeorm Entity and restart the app, a new columns will not be added in DB table event though synchronize=true is set in connection.