Just read on slashdot:
A critical root certificate expiring on March 14, 2025 will disable extensions and potentially break DRM-dependent streaming services for Firefox users running outdated browsers. Users must update to at least Firefox 128 or ESR 115.13+ to maintain functionality across Windows, macOS, Linux, and Android platforms.
This sounds bad but I have not time to check, if it really will be a problem for us.