patch 8.1.0232: Ruby error does not include backtrace

Problem:    Ruby error does not include backtrace.
Solution:   Add an error backtrace. (Masataka Pocke Kuwabara, closes #3267)
diff --git a/src/version.c b/src/version.c
index b826410..64aa76a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    232,
+/**/
     231,
 /**/
     230,