patch 8.2.5028: syntax regexp matching can be slow

Problem:    Syntax regexp matching can be slow.
Solution:   Adjust the counters for checking the timeout to check about once
            per msec. (closes #10487, closes #2712)
diff --git a/src/version.c b/src/version.c
index 3cc224e..480ff28 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5028,
+/**/
     5027,
 /**/
     5026,