I just upgraded a test site from Moodle 3.10.1 to 3.11.1. Before the upgrade, I noticed that I had several plugin updates that needed to be done. After I upgrade the core, these update notifications were gone though. The plugins were definitely not updated. For example, mod_lightboxgallery is still at version 3.7.2 (2020061800), even though version 3.10.0 (2021033100) is available here. I re-run "Check for available updates", but Moodle does not display the available plugin updates.
Did something change in Moodle 3.11.1? Does it take the supported Moodle versions of the plugin into account now? I see that lightboxgallery (for example) only shows that Moodle 3.10 is officially supported, but in the past Moodle would show all/any available plugin updates.