Add final newline to test file

Author: Guido van Rossum

test-data/unit/pythoneval-enum.test

@@ -219,4 +219,4 @@ _program.py:13: error: IntEnum() needs at least one item
 _program.py:14: error: Enum() with tuple or list expects strings or (name, value) pairs
 _program.py:15: error: Enum() with tuple or list expects strings or (name, value) pairs
 _program.py:16: error: IntEnum() with tuple or list expects strings or (name, value) pairs
-_program.py:17: error: Enum() with dict literal requires string literals
+_program.py:17: error: Enum() with dict literal requires string literals