Node 18 is now available for projects. You can upgrade projects to PWA Kit 2.7.3 or 3.0. Both versions support Node 18. Node 14 and Node 16 are now deprecated. The End-of-life for Nodes 14 and 16 is September 13, 2023. To avoid any disruptions to deployments, upgrade to Node 18.
See Upgrade Node Version.
If your project uses a deprecated Node version, a warning is displayed when you push bundles from the command line or the Managed Runtime Admin UI.