Add node 16.15.0, remove node 16.14.2
Add node 16.15.0, remove node 16.14.2

for stack(s) cflinuxfs3 [#182006894]

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