I am currently managing a project, which includes a library that is licensed under the MIT license. My current project is licensed under the Apache 2.0 license.
The maintainers of the library that I am using then relicense their project to a much stronger license, the GPL. I'm not informed of this in anyway: I took the source and included it within my project.
Since I am now using a library that is arguably improperly licensed, and that fails to meet the conditions of the newer GPL, I need to know a few things:
Would I be in violation of the GPL? Since the included project had been relicensed, would the MIT license still apply?
Am I under any obligation to then relicense my project under the GPL, despite my copy of the project includes the MIT license? Would I have to update the license file in my copy of the project?