fix: correct jsonfmt check for validation failure

mentioned in commit fd72ca26

mentioned in merge request common-ci-tasks-images!114 (merged)

mentioned in merge request gitlab-org/release-tools!2367 (merged)

mentioned in merge request infradev-report!55 (merged)

mentioned in merge request fluentd-docker!38 (merged)

mentioned in merge request es-diagnostics!15

mentioned in merge request gitlab-com/gl-infra/k8s-workloads/common!291 (merged)

mentioned in merge request asdf-promtool!43 (merged)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/terraform/cloudwatch_log_export!11 (merged)

mentioned in merge request slackline!154 (merged)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/byok-status-exporter!37 (merged)

mentioned in merge request gitlab-com/gl-infra/platform/gitlab-issue-report-kit!2 (merged)

mentioned in merge request pmv!278 (merged)

mentioned in merge request bigquery-loader!118 (merged)

mentioned in merge request jsonnet-tool!63 (merged)

mentioned in merge request terra-transformer!265 (merged)

mentioned in merge request asdf-gl-infra!35 (merged)

mentioned in merge request cmbr!176 (merged)

mentioned in merge request gitlab-com/runbooks!5804 (merged)

mentioned in merge request gitlab-com/gl-infra/platform/runway/runwayctl!2 (merged)

mentioned in merge request gcp-quota-exporter!2 (merged)

mentioned in merge request asdf-gl-infra!44 (closed)

mentioned in merge request es-diagnostics!18