patch 8.2.0455: cannot set the highlight group for a specific terminal

Problem:    Cannot set the highlight group for a specific terminal.
Solution:   Add the "highlight" option to term_start(). (closes #5818)
diff --git a/src/version.c b/src/version.c
index b1e6470..51e9e37 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    455,
+/**/
     454,
 /**/
     453,