feat(ISV-5571): ignore SBOM-related task errors in rh-advisories #786

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PipelineRun: <a href="https://console.redhat.com/application-pipeline/ns/rhtap-release-2-tenant/pipelinerun/release-service-catalog-on-pull-request-w8jbg" rel="nofollow">release-service-catalog-on-pull-request-w8jbg

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Red Hat Konflux/release-service-catalog-on-pull-request has successfully validated your commit.

Status	Duration	Name
✅ Succeeded	15 seconds	init
✅ Succeeded	14 seconds	clone-repository
✅ Succeeded	55 seconds	build-container
✅ Succeeded	7 seconds	build-image-index
✅ Succeeded	24 seconds	sast-snyk-check
✅ Succeeded	23 seconds	clair-scan
✅ Succeeded	10 seconds	deprecated-base-image-check
✅ Succeeded	10 seconds	apply-tags
✅ Succeeded	13 seconds	push-dockerfile
✅ Succeeded	42 seconds	clamav-scan
✅ Succeeded	28 seconds	rpms-signature-scan
✅ Succeeded	30 seconds	ecosystem-cert-preflight-checks
✅ Succeeded	11 seconds	show-sbom
✅ Succeeded	13 seconds	show-summary