Disable provenance/SBOM attestations #322

Job	Run time
Build, test and push (amd64, py36,py39,py310,py311,py312,py313,py314,py315,py314t,py315t,pypy,pyp...	1m 11s
Build, test and push (ppc64le, py39,py311)	1m 25s
Build, test and push (arm64, py312)	1m 25s
Build, test and push (s390x, py39,py310,py312)	1m 24s
Update Dockerhub description	0s
Update and test manifests	0s
	5m 25s

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