Disable provenance/SBOM attestations #317

Job	Run time
Build, test and push (s390x, py39,py310,py312)	22m 55s
Build, test and push (ppc64le, py39,py311)	21m 4s
Build, test and push (arm64, py312)	23m 13s
Build, test and push (amd64, py36,py39,py310,py311,py312,py313,py314,py315,py314t,py315t,pypy,pyp...	4m 31s
Update and test manifests	-1s
Update Dockerhub description	-1s
	1h 11m 41s

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