Mark unicode parsing as not compliant on jruby

ref jruby/jruby#3719

spec/lib/parser/variables_spec.rb

@@ -98,13 +98,16 @@
     parsed("FOO = BAR").should == [:cdecl, :FOO, [:const, :BAR]]
   end
 
-  it "parses unicode constants" do
-    parsed("FOOλ = 1").should == [:cdecl, :FOOλ, [:int, 1]]
-  end
 
-  it "parses unicode local variables" do
-    parsed("λ = 1").should == [:lasgn, :λ, [:int, 1]]
-    parsed("fooλ = 1").should == [:lasgn, :fooλ, [:int, 1]]
-    parsed("λfoo = 1").should == [:lasgn, :λfoo, [:int, 1]]
+  not_compliant_on :jruby do # REF: https://github.com/jruby/jruby/issues/3719
+    it "parses unicode constants" do
+      parsed("FOOλ = 1").should == [:cdecl, :FOOλ, [:int, 1]]
+    end
+
+    it "parses unicode local variables" do
+      parsed("λ = 1").should == [:lasgn, :λ, [:int, 1]]
+      parsed("fooλ = 1").should == [:lasgn, :fooλ, [:int, 1]]
+      parsed("λfoo = 1").should == [:lasgn, :λfoo, [:int, 1]]
+    end
   end
 end