[lldb] Use Continue instead of StepOver in TestSwiftAsyncBreakpoints

The test was doing a StepOver and checking that the stop reason was a
breakpoint; it seems more sensible to do a continue in that case.

Author: felipepiovezan

lldb/test/API/lang/swift/async_breakpoints/TestSwiftAsyncBreakpoints.py

@@ -36,7 +36,7 @@ def test(self):
         self.assertEquals(thread.GetStopDescription(128), "breakpoint 2.1")
         self.expect("expr timestamp1", substrs=["42"])
 
-        thread.StepOver()
+        process.Continue()
         self.assertIn("breakpoint 3.1", thread.GetStopDescription(128))
         self.expect("expr timestamp1", substrs=["42"])