bpo-33715: Fix multiprocessing test_wait_result() (GH-7971)

bpo-33715: Fix multiprocessing test_wait_result() (GH-7971) · python/cpython@404250e

Original file line number	Diff line number	Diff line change
`@@ -1217,9 +1217,9 @@ def test_wait_result(self):`
`1217`	`1217`	`p = self.Process(target=self._test_wait_result, args=(c, pid))`
`1218`	`1218`	`p.start()`
`1219`	`1219`
`1220`		`-self.assertTrue(c.wait(10))`
	`1220`	`+self.assertTrue(c.wait(60))`
`1221`	`1221`	`if pid is not None:`
`1222`		`-self.assertRaises(KeyboardInterrupt, c.wait, 10)`
	`1222`	`+self.assertRaises(KeyboardInterrupt, c.wait, 60)`
`1223`	`1223`
`1224`	`1224`	`p.join()`
`1225`	`1225`