patch 8.2.2839: default redirection missing "ash" and "dash"

Problem:    Default redirection missing "ash" and "dash".
Solution:   Recognize "ash" and "dash". (Natanael Copa, closes #8180)
diff --git a/src/version.c b/src/version.c
index ed852ad..36422c1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2839,
+/**/
     2838,
 /**/
     2837,