patch 8.1.1056: no eval function for Ruby

Problem:    No eval function for Ruby.
Solution:   Add rubyeval(). (Ozaki Kiichi, closes #4152)
diff --git a/src/version.c b/src/version.c
index e4e9279..c23e834 100644
--- a/src/version.c
+++ b/src/version.c
@@ -776,6 +776,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1056,
+/**/
     1055,
 /**/
     1054,