tests

Bump `spherical` version requirement for numpy compat #336

Job	Run time
Python 3.8 on Linux	3s
Python 3.12 on Linux	11m 4s
Python 3.8 on macOS	7s
Python 3.12 on macOS	7s
Python 3.8 on Windows	8s
Python 3.12 on Windows	7s
Create release and send to PyPI	24s
Trigger a binder rebuild	1s
	12m 1s

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