patch 8.2.0040: timers test is still flaky on Travis for Mac

Problem:    Timers test is still flaky on Travis for Mac.
Solution:   Run separately instead of as part of test_alot.
diff --git a/src/version.c b/src/version.c
index 9f7f48a..aeadb36 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    40,
+/**/
     39,
 /**/
     38,