patch 8.2.3561: cscope has a complicated way of giving an error message

Problem:    Cscope has a complicated way of giving an error message.
Solution:   Use semsg(). (James McCoy, closes #9038)
diff --git a/src/version.c b/src/version.c
index a1714eb..7dc55ac 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3561,
+/**/
     3560,
 /**/
     3559,