Hello. I see that https://cdnjs.com/libraries/signalr.js doesn’t have update to 2.4.1. It was released on 11 Apr 2019.
I did some searching and I found the problem why auto update isn’t working anymore for this package.
It seems that SignalR.js has stopped publishing updates to their Bower repo since version 2.4.1 (the NOTE at the end) and now only support updates through NPM, but their cdnjs package.json is still configured to check their bower repo for updates. This needs to be updated to check for NPM updates so that auto update can work correctly again.
Github issue for source: https://github.com/cdnjs/cdnjs/issues/13370#issuecomment-592988653
Submitted a PR: https://github.com/cdnjs/cdnjs/pull/13819