`rb_iseq_update_references()` cares `script_lines`

and it fixes compaction issue:
http://rubyci.s3.amazonaws.com/freebsd12/ruby-master/log/20211218T203001Z.fail.html.gz

iseq.c

@@ -263,6 +263,7 @@ rb_iseq_update_references(rb_iseq_t *iseq)
 
         body->variable.coverage = rb_gc_location(body->variable.coverage);
         body->variable.pc2branchindex = rb_gc_location(body->variable.pc2branchindex);
+        body->variable.script_lines = rb_gc_location(body->variable.script_lines);
         body->location.label = rb_gc_location(body->location.label);
         body->location.base_label = rb_gc_location(body->location.base_label);
         body->location.pathobj = rb_gc_location(body->location.pathobj);