patch 8.2.1181: json code not fully tested

Problem:    Json code not fully tested.
Solution:   Add more test coverage. (Dominique Pellé, closes #6433)
diff --git a/src/version.c b/src/version.c
index 23ea21e..bbb2c28 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1181,
+/**/
     1180,
 /**/
     1179,