patch 7.4.968

Problem:    test86 and test87 are flaky in Appveyor.
Solution:   Reduce the count from 8 to 7. (suggested by ZyX)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    968,
 /**/
     967,
 /**/