pythongh-134036: Update test_syntax for pythongh-133999 (python#135204)

Author: vstinner

Lib/test/test_syntax.py

@@ -1436,17 +1436,17 @@
    >>> try: pass
    ... except TypeError as name: raise from None
    Traceback (most recent call last):
-   SyntaxError: invalid syntax
+   SyntaxError: did you forget an expression between 'raise' and 'from'?
 
    >>> try: pass
    ... except* TypeError as name: raise from None
    Traceback (most recent call last):
-   SyntaxError: invalid syntax
+   SyntaxError: did you forget an expression between 'raise' and 'from'?
 
    >>> match 1:
    ...     case 1 | 2 as abc: raise from None
    Traceback (most recent call last):
-   SyntaxError: invalid syntax
+   SyntaxError: did you forget an expression between 'raise' and 'from'?
 
 Ensure that early = are not matched by the parser as invalid comparisons
    >>> f(2, 4, x=34); 1 $ 2