appveyor.yml: exclude TestEnumerable.rb on msys2
because it SEGVs on setup like: https://ci.appveyor.com/project/ruby/ruby/builds/20431217/job/97no5h1gqv50k1vf
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65889 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
appveyor.yml: exclude TestEnumerable.rb on msys2
because it SEGVs on setup like:
https://ci.appveyor.com/project/ruby/ruby/builds/20431217/job/97no5h1gqv50k1vf
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65889 b2dd03c8-39d4-4d8f-98ff-823fe69b080e