patch 8.2.0783: libvterm code lags behind the upstream version

Problem:    Libvterm code lags behind the upstream version.
Solution:   Include revisions 728 - 729.
diff --git a/src/libvterm/t/25state_input.test b/src/libvterm/t/25state_input.test
index a5119fb..4eb4c6a 100644
--- a/src/libvterm/t/25state_input.test
+++ b/src/libvterm/t/25state_input.test
@@ -111,6 +111,18 @@
 INKEY 0 Enter
   output "\x0d\x0a"
 
+!Unmodified F1 is SS3 P
+INKEY 0 F1
+  output "\eOP"
+
+!Modified F1 is CSI P
+INKEY S F1
+  output "\e[1;2P"
+INKEY A F1
+  output "\e[1;3P"
+INKEY C F1
+  output "\e[1;5P"
+
 !Keypad in DECKPNM
 INKEY 0 KP0
   output "0"