patch 9.0.1222: terminal tests are flaky on MacOS

Problem:    Terminal tests are flaky on MacOS.
Solution:   Add TermWait() calls. (Yegappan Lakshmanan, closes #11852)
diff --git a/src/version.c b/src/version.c
index d94f43f..22a8e8b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1222,
+/**/
     1221,
 /**/
     1220,