Update test_pprint.py from 3.13.7

Author: ShaharNaveh

Lib/test/test_pprint.py

@@ -374,7 +374,7 @@ def __new__(cls, celsius_degrees):
                 return super().__new__(Temperature, celsius_degrees)
             def __repr__(self):
                 kelvin_degrees = self + 273.15
-                return f"{kelvin_degrees}°K"
+                return f"{kelvin_degrees:.2f}°K"
         self.assertEqual(pprint.pformat(Temperature(1000)), '1273.15°K')
 
     def test_sorted_dict(self):