BLD: use smaller scipy-openblas builds#27162
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Backport of #27147.
Builds on #27140 to use the same OpenBLAS build but with fewer kernels. Based on the analysis in MacPython/openblas-libs#144 there are now 5 kernels based on cpu core labels
PRESCOTT NEHALEM SANDYBRIDGE HASWELL SKYLAKEX. Needs a release note about the possible performance implications, and will also add a note about the windows changes in #27140.