Merge pull request #574 from chadlwilson/bump-snakeyaml

Bump snakeyaml from 1.28 to 1.31 to resolve CVE-2022-25857

Author: hsbt

lib/psych/versions.rb

@@ -5,6 +5,6 @@ module Psych
   VERSION = '5.0.0.dev'
 
   if RUBY_ENGINE == 'jruby'
-    DEFAULT_SNAKEYAML_VERSION = '1.28'.freeze
+    DEFAULT_SNAKEYAML_VERSION = '1.31'.freeze
   end
 end