patch 8.2.1863: json code not sufficiently tested

Problem:    Json code not sufficiently tested.
Solution:   Add more test cases. (Dominique Pellé, closes #7166)
diff --git a/src/version.c b/src/version.c
index 2e6bb98..3b19fd5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1863,
+/**/
     1862,
 /**/
     1861,