fix: temporarily cap numpy to avoid segfault #108

Job	Run time
Linting	2m 53s
Installation (3.7)	1m 10s
Pytest (3.7)	9m 29s
Pytest (3.8)	11m 2s
Installation (3.8)	1m 52s
Pytest (3.9)	1m 33s
Installation (3.9)	1m 35s
Installation (3.10)	1m 33s
Pytest (3.10)	1m 43s
Installation (3.11)	1m 24s
Pytest (3.11)	12m 29s
Coverage / Update Base Coverage	12s
Coverage / Check Pull Request Coverage	0s
	46m 55s

Provide feedback