patch 8.2.0701: Vim9 test fails without job feature

Problem:    Vim9 test fails without job feature.
Solution:   Add feature check.

src/testdir/test_vim9_script.vim

@@ -466,6 +466,7 @@ def Test_try_catch_fails()
   call CheckDefFailure(['throw xxx'], 'E1001:')
 enddef
 
+if has('channel')
   let someJob = test_null_job()
 
   def FuncWithError()
@@ -479,6 +480,7 @@ func Test_convert_emsg_to_exception()
       call assert_match('Vim:E908:', v:exception)
     endtry
   endfunc
+endif
 
 let s:export_script_lines =<< trim END
   vim9script

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    701,
 /**/
     700,
 /**/