Adopt adding ShareableConstantNode node

The method visitShareableConstantNode is not implemented but it should be overridden in the YARPTranslator to suppress linter warning:
```
Missing methods in YARPTranslator: ["visitShareableConstantNode"]
YARPTranslator should override all visit* methods from AbstractNodeVisitor.
```

Author: andrykonchin

src/main/java/org/truffleruby/parser/YARPTranslator.java

@@ -3250,6 +3250,12 @@ public RubyNode visitStatementsNode(Nodes.StatementsNode node) {
         return sequence(node, rubyNodes);
     }
 
+    @Override
+    public RubyNode visitShareableConstantNode(Nodes.ShareableConstantNode node) {
+        // is not implemented for now but the method is supposed to be overridden
+        throw fail(node);
+    }
+
     @Override
     public RubyNode visitStringNode(Nodes.StringNode node) {
         final RubyNode rubyNode;

test/mri/excludes/TestGc.rb

@@ -20,3 +20,4 @@
 exclude :test_stat_heap_all, "NoMethodError: undefined method `stat_heap' for GC:Module"
 exclude :test_latest_gc_info_need_major_by, "NameError: uninitialized constant GC::OPTS"
 exclude :test_thrashing_for_young_objects, "NoMethodError: undefined method `stat_heap' for GC:Module"
+exclude :test_ast_node_buffer, "SyntaxError: (eval):2: YARPTranslator does not know how to translate ShareableConstantNode at (eval):2"