patch 8.2.1988: still in Insert mode when opening terminal popup

Problem:    Still in Insert mode when opening terminal popup with a <Cmd>
            mapping in Insert mode.
Solution:   Exit Insert mode. (closes #7295)
diff --git a/src/version.c b/src/version.c
index b031e63..502a876 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1988,
+/**/
     1987,
 /**/
     1986,