Use the new Ractor#value method.

* https://dev.to/ko1/ractorport-revamping-the-ractor-api-98

Author: postmodern

spec/crc_examples.rb

@@ -63,7 +63,7 @@
     it "should calculate CRC inside ractor" do
       digest = Ractor.new(described_class, string) { |klass, string|
         klass.hexdigest(string)
-      }.take
+      }.value
 
       expect(digest).to eq expected
     end