Update pipelines and triggers packages to their latest versions which will be shipped with OpenShift Pipelines v1.6
Pipeline https://github.com/tektoncd/pipeline - v0.28.0
Triggers https://github.com/tektoncd/triggers - v0.16.0
Ref: https://docs.jboss.org/pages/viewpage.action?spaceKey=SRVKP&title=Pipeline+Component+Matrix