input: Write a python function to sort student scores by their names using a dictionary.
  assert sort_student_scores({'John': 88, 'Alice': 95, 'Bob': 72}) == [('Alice', 95), ('Bob', 72), ('John', 88)]
  assert sort_student_scores({'Dave': 80, 'Charlie': 70, 'Eve': 90}) == [('Charlie', 70), ('Dave', 80), ('Eve', 90)]
  assert sort_student_scores({'Mike': 65, 'Anna': 85, 'Tom': 75}) == [('Anna', 85), ('Mike', 65), ('Tom', 75)]
output: def sort_student_scores(scores):
      return sorted(scores.items())