ROX-25715: Add Slack notifications for Konflux builds #1605

Namespace: <a href="https://detailurl.setting.custom-console-url-namespace.is.not.configured" rel="nofollow">rh-acs-tenant
PipelineRun: <a href="https://console.redhat.com/preview/application-pipeline/ns/rh-acs-tenant/pipelinerun/scanner-build-p9s5k" rel="nofollow">scanner-build-p9s5k

Success

Red Hat Konflux/scanner-build has successfully validated your commit.

Status	Duration	Name
✅ Succeeded	12 seconds	init
✅ Succeeded	37 seconds	clone-repository
✅ Succeeded	42 seconds	fetch-scanner-data
✅ Succeeded	16 seconds	determine-image-tag
✅ Succeeded	2 minutes	prefetch-dependencies
✅ Succeeded	4 minutes	build-container-amd64
✅ Succeeded	16 seconds	sast-snyk-check
✅ Succeeded	4 minutes	build-container-ppc64le
✅ Succeeded	5 minutes	build-container-arm64
✅ Succeeded	11 seconds	deprecated-base-image-check-amd64
✅ Succeeded	1 minute	build-source-image
✅ Succeeded	7 seconds	deprecated-base-image-check-ppc64le
✅ Succeeded	9 minutes	build-container-s390x
✅ Succeeded	9 seconds	deprecated-base-image-check-arm64
✅ Succeeded	17 seconds	deprecated-base-image-check-s390x
✅ Succeeded	20 seconds	build-image-manifest-konflux
✅ Succeeded	19 seconds	build-image-manifest
✅ Succeeded	4 minutes	clamav-scan
✅ Succeeded	50 seconds	clair-scan
✅ Succeeded	25 seconds	sbom-json-check
✅ Succeeded	6 seconds	show-sbom