CI fails

[bertsky]

This is new:

make deps-ubuntu deps-test deps install repo/assets

    100% |████████████████████████████████| 88.9MB 17kB/s s eta 0:00:0101
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-8ttde9he/opencv-python-headless/setup.py", line 9, in <module>
        import skbuild
    ModuleNotFoundError: No module named 'skbuild'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-8ttde9he/opencv-python-headless/
Makefile:67: recipe for target 'deps' failed
make: *** [deps] Error 1

@kba any idea?