patch 8.2.3183: duplicate error numbers

Problem:    Duplicate error numbers.
Solution:   Adjust the error numbers.
diff --git a/src/errors.h b/src/errors.h
index be1341a..97e7a12 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -505,6 +505,6 @@
 EXTERN char e_list_required_for_argument_nr[]
 	INIT(= N_("E1211: List required for argument %d"));
 EXTERN char e_bool_required_for_argument_nr[]
-	INIT(= N_("E1211: Bool required for argument %d"));
+	INIT(= N_("E1212: Bool required for argument %d"));
 EXTERN char e_redefining_imported_item_str[]
-	INIT(= N_("E1212: Redefining imported item %s"));
+	INIT(= N_("E1213: Redefining imported item %s"));