patch 8.2.0707: Vim9 function test fails

Problem:    Vim9 function test fails.
Solution:   Adjust expected error code.
diff --git a/src/version.c b/src/version.c
index ea8b2a5..c004e33 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    707,
+/**/
     706,
 /**/
     705,