input: Write a function to convert all baby names to uppercase.
  assert convert_to_uppercase(['Bob', 'Alice', 'Billy'])==['BOB', 'ALICE', 'BILLY']
  assert convert_to_uppercase(['john', 'paul', 'george', 'ringo'])==['JOHN', 'PAUL', 'GEORGE', 'RINGO']
  assert convert_to_uppercase(['susan', 'jessica', 'emily'])==['SUSAN', 'JESSICA', 'EMILY']
output: def convert_to_uppercase(names):
      return [name.upper() for name in names]