Bump nokogiri from 1.8.0 to 1.13.4 in /test_apps/test_app_rails_5_1#18

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dependabot/bundler/test_apps/test_app_rails_5_1/nokogiri-1.13.4webhoernchen/massassignment_security_form:dependabot/bundler/test_apps/test_app_rails_5_1/nokogiri-1.13.4Copy head branch name to clipboard