patch 8.2.1077: no enough test coverage for highlighting

Problem:    No enough test coverage for highlighting.
Solution:   Add more tests. (Yegappan Lakshmanan, closes #6351)
diff --git a/src/version.c b/src/version.c
index 948f561..d9a36e2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1077,
+/**/
     1076,
 /**/
     1075,