Exclude attestation manifests (sbom, provenance) during the build usi… #112

Job	Run time
helm-lint	9s
validate-csv	33s
validate-helm-values	34s
go-build	1m 25s
unit tests	50s
go-check	1m 47s
build-gpu-operator (ubi8)	1m 27s
build-gpu-operator-validator (ubi8)	1m 16s
e2e-tests-nvidiadriver	1m 14s
e2e-tests-containerd	1m 12s
	10m 27s

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