patch 8.1.0778: terminal test fails on MS-Windows

Problem:    Terminal test fails on MS-Windows.
Solution:   Temporarily skip the test on MS-Windows.  Do run it both in
            terminal and GUI on other systems.
diff --git a/src/version.c b/src/version.c
index a83bad6..3a1369c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -792,6 +792,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    778,
+/**/
     777,
 /**/
     776,