Add nanobind

[thomasisensee]

• Add nanobind as option for python bindings, alongside the existing pybind11 option
• Bump GitHub actions versions
• Fix issue with version bump on baked project actually bumping the cmake version

[thomasisensee]

In the test-gha-cookiecutter, the version was not only increased on the project version, but also on the cmake version. Result: it is now at "0.0.122" which does not exist.

https://github.com/dokempf/test-gha-cookiecutter/blob/292da09ccc3baf22a5a486e00eb46b7b813a488c/pyproject.toml#L35

The last release was two years ago: https://pypi.org/project/testghacookiecutter/#history

EDIT: fixed with subsequent commits

[thomasisensee]

Finally we got the releases:
PyPI: https://pypi.org/project/testghacookiecutter/
TestPyPI: https://test.pypi.org/project/testghacookiecutter/