patch 8.1.2362: cannot place signs in a popup window

Problem:    Cannot place signs in a popup window. (Maxim Kim)
Solution:   Use the group prefix "PopUp" to specify which signs should show up
            in a popup window. (closes #5277)
diff --git a/src/version.c b/src/version.c
index 5747085..5833f38 100644
--- a/src/version.c
+++ b/src/version.c
@@ -738,6 +738,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2362,
+/**/
     2361,
 /**/
     2360,