patch 8.0.1453: terminal test fails on some slow terminals

Problem:    Terminal test fails on some slow terminals.
Solution:   Increase timeout to 10 seconds.
diff --git a/src/version.c b/src/version.c
index 0549494..cd99460 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1453,
+/**/
     1452,
 /**/
     1451,