patch 8.1.1738: testing lambda with timer is slow

Problem:    Testing lambda with timer is slow.
Solution:   Do not test timer accuracy, only that it works. (Daniel Hahler,
            closes #4723)
diff --git a/src/version.c b/src/version.c
index 96f4bce..9eb1e13 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1738,
+/**/
     1737,
 /**/
     1736,