ENH: compute hash without `PYTHONHASHSED` #664

Job	Run time
pytest / Determine job matrix	4s
pytest / Determine job matrix	4s
style / Determine skipped pre-commit hooks	4s
style / Determine skipped pre-commit hooks	5s
doc / nb / Execute and build documentation	2m 56s
doc / nb / Execute and build documentation	2m 47s
doc / linkcheck / Check external links	53s
doc / linkcheck / Check external links	48s
style / Run local pre-commit hooks	51s
style / Run local pre-commit hooks	45s
pytest / Run unit tests (3.10, ubuntu-24.04)	1m 13s
pytest / Run unit tests (3.10, ubuntu-24.04)	1m 21s
pytest / Run unit tests (3.11, ubuntu-24.04)	1m 20s
pytest / Run unit tests (3.11, ubuntu-24.04)	1m 13s
pytest / Run unit tests (3.9, ubuntu-24.04)	1m 13s
pytest / Run unit tests (3.9, ubuntu-24.04)	1m 24s
pytest / Run unit tests (3.12, ubuntu-24.04, ampform)	4m 20s
pytest / Run unit tests (3.12, ubuntu-24.04, ampform)	3m 27s
pytest / Run unit tests (3.9, macos-14)	1m 9s
pytest / Run unit tests (3.9, macos-14)	1m 11s
style / Push changes	0s
style / Push changes	0s
doc / Upload to GitHub Pages	0s
doc / Upload to GitHub Pages	0s
	27m 8s

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