add sast-shell-check task #1437

Namespace: <a href="https://detailurl.setting.custom-console-url-namespace.is.not.configured" rel="nofollow">konflux-ci
PipelineRun: <a href="https://console.redhat.com/application-pipeline/ns/konflux-ci/pipelinerun/build-definitions-pull-request-gz8lv" rel="nofollow">build-definitions-pull-request-gz8lv

Success

Red Hat Konflux/build-definitions-pull-request has successfully validated your commit.

Status	Duration	Name
✅ Succeeded	15 seconds	fetch-repository
✅ Succeeded	19 seconds	task-lint-check
✅ Succeeded	24 seconds	sast-snyk-check
✅ Succeeded	39 seconds	ec-task-checks
✅ Succeeded	17 seconds	check-task-migration-md
✅ Succeeded	1 minute	build-appstudio-utils
✅ Succeeded	4 minutes	build-bundles
✅ Succeeded	40 seconds	check-partner-tasks
✅ Succeeded	30 seconds	sast-unicode-check
✅ Succeeded	18 minutes	e2e-tests
✅ Succeeded	46 seconds	check-task-pipeline-repo-existence
✅ Succeeded	7 seconds	e2e-cleanup