old_contents: BOARDS = {
      'arduino': {
          'digital': tuple(x for x in range(14)),
          'analog': tuple(x for x in range(6)),
          'pwm': (3, 5, 6, 9, 10, 11),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      },
      'arduino_mega': {
          'digital': tuple(x for x in range(54)),
          'analog': tuple(x for x in range(16)),
          'pwm': tuple(x for x in range(2, 14)),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      },
      'arduino_due': {
          'digital': tuple(x for x in range(54)),
          'analog': tuple(x for x in range(12)),
          'pwm': tuple(x for x in range(2, 14)),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      },
  
      'nano': {
          'digital': tuple(x for x in range(14)),
          'analog': tuple(x for x in range(8)),
          'pwm': (3, 5, 6, 9, 10, 11),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      }
  }
  
new_contents: BOARDS = {
      'arduino': {
          'digital': tuple(x for x in range(14)),
          'analog': tuple(x for x in range(6)),
          'pwm': (3, 5, 6, 9, 10, 11),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      },
      'arduino_mega': {
          'digital': tuple(x for x in range(54)),
          'analog': tuple(x for x in range(16)),
          'pwm': tuple(x for x in range(2, 14)),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      },
      'arduino_due': {
          'digital': tuple(x for x in range(54)),
          'analog': tuple(x for x in range(12)),
          'pwm': tuple(x for x in range(2, 14)),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      },
  
      'arduino_nano': {
          'digital': tuple(x for x in range(14)),
          'analog': tuple(x for x in range(8)),
          'pwm': (3, 5, 6, 9, 10, 11),
          'use_ports': True,
          'disabled': (0, 1)  # Rx, Tx, Crystal
      }
  }
  
subject: Correct class name of arduino nano