patch 8.2.0707: Vim9 function test fails

Problem:    Vim9 function test fails.
Solution:   Adjust expected error code.

src/testdir/test_vim9_func.vim

@@ -656,7 +656,7 @@ enddef
 def Test_unknown_function()
   CheckDefExecFailure([
       'let Ref: func = function("NotExist")',
-      'delfunc g:NotExist'], 'E700:')
+      'delfunc g:NotExist'], 'E130:')
 enddef
 
 def RefFunc(Ref: func(string): string): string

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    707,
 /**/
     706,
 /**/