patch 8.1.1470: new Unicode character U32FF missing from double-width table

Problem:    New Unicode character U32FF missing from double-width table.
Solution:   Add the character.
diff --git a/src/version.c b/src/version.c
index 6317804..b7d58e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1470,
+/**/
     1469,
 /**/
     1468,