patch 8.2.4884: test fails without the job/channel feature

Problem:    Test fails without the job/channel feature. (Dominique Pellé)
Solution:   Add condition.
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 8811382..8ad3b30 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -4199,8 +4199,10 @@
   var Var_func: func
   var var_string: string
   var var_blob: blob
-  var var_job: job
-  var var_channel: channel
+  if has('job')
+    var var_job: job
+    var var_channel: channel
+  endif
   var var_list: list<any>
   var var_dict: dict<any>
 
diff --git a/src/version.c b/src/version.c
index d997897..77aab2f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4884,
+/**/
     4883,
 /**/
     4882,