An alternative:

- copy the dependencies' tests into your own tests

- copy the code in to your codebase as a library using the same review process you would for code from your own team

- treat updates to the library in the same way you would for updates to your own code

Apparently, this extra work will now not be a problem, because we have AI making us 10x more efficient. To be honest, even without AI, we should've been doing this from the start, even if I understand why we haven't. The excuses are starting to wear thin though.