Merge pull request #7274 from rubygems/fix-bundler-daily-ci

Fix Bundler daily CI

Author: deivid-rodriguez

bundler/spec/runtime/self_management_spec.rb

@@ -28,7 +28,7 @@
       expect(out).to include("Bundler #{Bundler::VERSION} is running, but your lockfile was generated with #{previous_minor}. Installing Bundler #{previous_minor} and restarting using that version.")
 
       # It uninstalls the older system bundler
-      bundle "clean --force"
+      bundle "clean --force", artifice: nil
       expect(out).to eq("Removing bundler (#{Bundler::VERSION})")
 
       # App now uses locked version