Endoflife.date
End-of-life and support dates for hundreds of things - languages, runtimes, databases, distros, frameworks.
Answers the question you always need before an upgrade argument: is this version still supported, and when does it stop being supported. There is an API and a CLI, so you can wire it into CI and fail a build when a dependency goes out of support.
Unglamorous and I use it more than most tools I could name.
See also: