Commits
Ralf W. Grosse-Kunstleve authored and GitHub committed b7c33009ac5
Start pybind11v3: Remove all code for `PYBIND11_INTERNALS_VERSION`s `4` and `5` (#5530)
* Start pybind11v3
* Remove all code for PYBIND11_INTERNALS_VERSION 4 and 5
* Fix oversight: pybind11/_version.py needs to be updated as well.
* Add @pytest.mark.skipif("env.GRAALPY", reason="TODO debug segfault")