Updating libcbv2g

[SebaLukas]

Describe your changes

With the changes in libcbv2g, the CMakeLists.txt files of libiso15118 must also be adapted.

Issue ticket number and link

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [ ] I have made corresponding changes to the documentation
• [x] I read the contribution documentation and made sure that my changes meet its requirements