GitLab Runner update required to use SAST in Auto DevOps

What this post added

This post introduces a breaking change for SAST job definitions in Auto DevOps with GitLab 11.6, requiring GitLab Runner 11.5 or newer. This is due to the adoption of the `reports` syntax, which is necessary for displaying SAST results in the Group Security Dashboard. Runners prior to 11.5 will not support this syntax, causing SAST jobs to fail without blocking pipelines and preventing security reports from being generated. This change is a precursor to similar updates for Dependency Scanning, Container Scanning, DAST, and License Management.