Loosen exception regexps for Python 3.14

Python 3.14 changes the exception message for passing wrong types
to `await` to:

    TypeError: 'int' object can't be awaited

Loosen the regular expression to accept both the old and the new
exception message.

Author: mgorny

tests/test_async_py3.py

@@ -498,15 +498,15 @@ def test_await_1(lop):
     async def foo():
         await 1
 
-    with pytest.raises(TypeError, match='object int can.t.*await'):
+    with pytest.raises(TypeError, match='int.*can.t.*await'):
         run_async(lop.Proxy(foo))
 
 
 def test_await_2(lop):
     async def foo():
         await []
 
-    with pytest.raises(TypeError, match='object list can.t.*await'):
+    with pytest.raises(TypeError, match='list.*can.t.*await'):
         run_async(lop.Proxy(foo))