[lldb] Skip TestSwiftAsyncSteppingManyTasks while rare failure is investigated

Author: felipepiovezan

lldb/test/API/lang/swift/async/stepping/step_over_lots_of_tasks/TestSwiftAsyncSteppingManyTasks.py

@@ -5,7 +5,7 @@
 
 
 @skipIfAsan  # rdar://138777205
-@skipIf(setting=('symbols.use-swift-clangimporter', 'false'))
+@skipIf(bugnumber = "rdar://144868718")
 class TestCase(lldbtest.TestBase):
 
     def check_is_in_line(self, thread, expected_linenum, expected_tid):