Store container scanning SBoMs as reports

Proposal

Similar to Store dependency scanning SBoMs as reports (!99126 - merged) for dependency scanning, we need to make the same changes to the container scanning template once Generate SBOM in Container Scanning for Trivy-b... (#396381 - closed) has been completed.

Implementation Plan

1. Update the following templates:

   • Container-Scanning.gitlab-ci.yml
   • Container-Scanning.latest.gitlab-ci.yml

   Add the cyclonedx report artifact:

   artifacts:
     reports:
       container_scanning: gl-container-scanning-report.json
       dependency_scanning: gl-dependency-scanning-report.json
   +   cyclonedx: "**/gl-sbom-*.cdx.json" 

2. Run a manual test to ensure that the container_scanning report artifact can be downloaded from a pipeline.