TEST: 2.1.x + blas variants

[h-vetinari]

Continuing the analysis from #317, #307, #293, #288, #273, #252, #237, #227 & #196. Do not merge.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[h-vetinari]

Update for numpy 2.1.0

Like with 2.0.0, we're all green! 🥳

Notable

• Dropped Python 3.9
• MKL dropped support for osx; CI still running with last supported version

Details

lib	before	after	updated version	updated build
numpy	2.0.0	2.1.0	X
libblas	3.9.0-22	3.9.0-23		X
blis	0.9.0-2	0.9.0-2
openblas	0.3.27-pthreads-0	0.3.27-pthreads-0
mkl	2024.1.0-692 (linux/win) 2023.2.0-50500 (osx)	2024.2.1-103 (linux) 2023.2.0-50500 (osx) 2024.1.0-694 (win)	X
netlib	3.9.0-5	3.9.0-6		X
qemu-user-static	8.2.4-1	8.2.4-1

---

variant	accelerate	blis	mkl	netlib	openblas	sum*
linux / x86	➖	✔️	✔️	✔️	✔️	-
linux / aarch	➖	➖	➖	✔️	✔️	-
linux / ppc64le	➖	➖	➖	✔️	✔️	-
osx / arm	❔	➖	➖	❔	❔	-
osx / x86	✔️	✔️	✔️	✔️	✔️	-
win / x86	➖	✔️	✔️	✔️	✔️	-
sum*	-	-	-	-	-

* sum of Failures (out of a total of 51 CI combinations being tested)

Build logs:
Azure