old_contents: from passlib.context import CryptContext
  
  password_context = CryptContext(
      # use plaintext only for tests!!!
      schemes=['bcrypt', 'plaintext'],
      deprecated="auto"
  )
  
new_contents: from passlib.context import CryptContext
  
  password_context = CryptContext(
      # use plaintext only for tests!!!
      schemes=['pbkdf2_sha256', 'plaintext'],
      deprecated="auto"
  )
  
subject: use pbkdf2_sha256 as default algo for passwords