Lengthen CI job timeout #458

Job	Run time
Build distribution packages	17s
Test documentation website generation	36s
Test with nox (ubuntu-20.04, 3.11, pytest_min)	57s
Test with nox (ubuntu-20.04, 3.11, ci_checks_max)	1m 31s
Cross-arch tests with nox	0s
Cross-arch tests with nox	0s
Test package installation in different architectures	3m 21s
Test with nox	2s
Create GitHub release	0s
Publish documentation website to GitHub pages	0s
Publish packages to PyPI	0s
	6m 44s

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