Add rubygems 3.3.19, remove rubygems 3.3.18
Add rubygems 3.3.19, remove rubygems 3.3.18

for stack(s) cflinuxfs3 [#182833830]

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