update openblas to match numpy/numpy

[mattip]

Elsewhere @rgommers commented (slightly edited)

If we want to auto-sync with numpy/numpy, we should:

• take a single job in the main repo and make that clone this repo
• check (on PRs to the main branch only) openblas_requirements.txt vs. ci_requirements.txt version numbers are equal or the ones in openblas_requirements.txt are higher, and fail if that's not the case.

Then, to bump the version, this repo has to be updated first, so it can't go out of date

custom_checks is probably the right job: https://github.com/numpy/numpy/blob/0fdb1979cdfcdd31b61f423b66a384fabd1d7fd7/.github/workflows/linux.yml#L323

This PR updates the version of scipy_openblas so we can get started on the other steps.

[rgommers]

Thanks Matti! I'll have a look at the CI check now.