patch 8.2.0414: channel connect_waittime() test is flaky

Problem:    Channel connect_waittime() test is flaky.
Solution:   Set the test_is_flaky flag.  Use test_is_flaky for more tests.
diff --git a/src/version.c b/src/version.c
index 13c384f..19b1be4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    414,
+/**/
     413,
 /**/
     412,