patch 8.0.1329: when a flaky test fails it also often fails the second time

Problem:    When a flaky test fails it also often fails the second time.
Solution:   Sleep a couple of seconds before the second try.
diff --git a/src/version.c b/src/version.c
index d311de9..93fb5cb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1329,
+/**/
     1328,
 /**/
     1327,