Add bundler 2.2.25, remove bundler 2.2.24
Add bundler 2.2.25, remove bundler 2.2.24

for stack(s) cflinuxfs3 [#179075341]

cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack