patch 8.2.2312: build failure with Ruby 3.0 and 32 bits

Problem:    Build failure with Ruby 3.0 and 32 bits.
Solution:   Add #ifdef. (closes #7638)
diff --git a/src/version.c b/src/version.c
index c79b219..9604650 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2312,
+/**/
     2311,
 /**/
     2310,