patch 8.2.5111: no test for --gui-dialog-file

Problem:    No test for --gui-dialog-file.
Solution:   Add a test.
diff --git a/src/version.c b/src/version.c
index 1f38480..a438340 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5111,
+/**/
     5110,
 /**/
     5109,