snyk-sast: added stats for Snyk scans

[jperezdealgaba]

Solves: https://issues.redhat.com/browse/OSH-769

Adding the stats to snyk scans in the result's SARIF file of successful scans. Example of successful pipeline: https://konflux.apps.stone-prod-p02.hjvn.p1.openshiftapps.com/application-pipeline/workspaces/jperezde/applications/test-coverity/pipelineruns/osh-cli-container-konflux-test-2-on-pull-request-znx98

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Look for any open pull requests in the repository with the title "e2e-tests update" and see if there are recent e2e-tests updates that will be applicable to your change.

[jperezdealgaba]

I can not change reviewers/asignee cc/ @kdudka @ralphbean

[kdudka]

Me neither.