Fix issue reported by pylint #243

Namespace: <a href="https://detailurl.setting.custom-console-url-namespace.is.not.configured" rel="nofollow">konflux-sec-eng-spec-tenant
PipelineRun: <a href="https://console.redhat.com/application-pipeline/ns/konflux-sec-eng-spec-tenant/pipelinerun/nbde-tang-server-multiarch-bundle-1-1-on-pull-request-79qzh" rel="nofollow">nbde-tang-server-multiarch-bundle-1-1-on-pull-request-79qzh

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Red Hat Konflux/nbde-tang-server-multiarch-bundle-1-1-on-pull-request has successfully validated your commit.

Status	Duration	Name
✅ Succeeded	6 seconds	init
✅ Succeeded	10 seconds	clone-repository
✅ Succeeded	56 seconds	prefetch-dependencies
✅ Succeeded	1 minute	build-container
✅ Succeeded	8 seconds	build-image-index
✅ Succeeded	11 seconds	deprecated-base-image-check
✅ Succeeded	49 seconds	build-source-image
✅ Succeeded	15 seconds	rpms-signature-scan
✅ Succeeded	21 seconds	sast-snyk-check
✅ Succeeded	13 seconds	ecosystem-cert-preflight-checks
✅ Succeeded	28 seconds	clair-scan
✅ Succeeded	39 seconds	clamav-scan
✅ Succeeded	6 seconds	apply-tags
✅ Succeeded	14 seconds	push-dockerfile
✅ Succeeded	11 seconds	show-sbom