Check if new features in numba 0.60 could improve ctapipe performance

[maxnoe]

Please describe the use case that requires this feature.

Numba added a couple of new features in 0.60, including

• Experimental support for calling guvectorize functions in other jitted functions
• Experimental support for ufunc.at

See full changelog in https://numba.readthedocs.io/en/stable/release/0.60.0-notes.html

Describe the solution you'd like

Check our usage of numba and see if we can gain something from using these new features