patch 8.1.0462: when using ConPTY Vim can be a child process

Problem:    When using ConPTY Vim can be a child process.
Solution:   To find a Vim window use both EnumWindows() and
            EnumChildWindows(). (Nobuhiro Takasaki, closes #3521)

src/version.c

@@ -792,6 +792,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    462,
 /**/
     461,
 /**/