patch 8.2.1139: Vim9: test for silent echo fails in some environments

Problem:    Vim9: test for silent echo fails in some environments.
Solution:   Use :function instead of :def.
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 94c9457..d7c37b1 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -920,7 +920,7 @@
   assert_equal('full', Line_continuation_in_def('.'))
 enddef
 
-def Test_silent_echo()
+func Test_silent_echo()
   CheckScreendump
 
   let lines =<< trim END
@@ -930,17 +930,17 @@
     enddef
     defcompile
   END
-  writefile(lines, 'XTest_silent_echo')
+  call writefile(lines, 'XTest_silent_echo')
 
   " Check that the balloon shows up after a mouse move
   let buf = RunVimInTerminal('-S XTest_silent_echo', {'rows': 6})
-  term_sendkeys(buf, ":abc")
+  call term_sendkeys(buf, ":abc")
   call VerifyScreenDump(buf, 'Test_vim9_silent_echo', {})
 
   " clean up
   call StopVimInTerminal(buf)
   call delete('XTest_silent_echo')
-enddef
+endfunc
 
 
 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/version.c b/src/version.c
index 950871e..23d2d1b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1139,
+/**/
     1138,
 /**/
     1137,