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/Make_mvc.mak b/src/Make_mvc.mak
index c93517b..8240f50 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1812,6 +1812,7 @@
 
 CCCTERM = $(CC) $(CFLAGS) -Ilibvterm/include -DINLINE="" \
 	-DVSNPRINTF=vim_vsnprintf \
+	-DSNPRINTF=vim_snprintf \
 	-DIS_COMBINING_FUNCTION=utf_iscomposing_uint \
 	-DWCWIDTH_FUNCTION=utf_uint2cells \
 	-DGET_SPECIAL_PTY_TYPE_FUNCTION=get_special_pty_type \