patch 8.2.4726: cannot use expand() to get the script name

Problem:    Cannot use expand() to get the script name.
Solution:   Support expand('<script>'). (closes #10121)
diff --git a/src/version.c b/src/version.c
index 740c32d..8b4f302 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4726,
+/**/
     4725,
 /**/
     4724,