[fixup] Filter logs in testing_bugfix

Fixup [fix] "Adapt to setuptools>=65.6.0 logging on root"

src/zc/buildout/tests/test_all.py

@@ -4244,7 +4244,12 @@ def test_suite():
                 ),
                ])
             ),
-        doctest.DocFileSuite('testing_bugfix.txt'),
+        doctest.DocFileSuite('testing_bugfix.txt',
+            checker=renormalizing.RENormalizing([
+                zc.buildout.testing.not_found,
+                zc.buildout.testing.root_logger_messages,
+                ])
+            ),
     ]
 
     docdir = os.path.join(ancestor(__file__, 5), 'doc')