Improve security auditing with GitLab Operational Container Scanning

What this post added

This post introduces and details the implementation of GitLab's Operational Container Scanning feature. It explains how to configure and deploy this capability, which allows for container vulnerability scans against running containers in a Kubernetes environment. The post covers prerequisites, deploying a sample application, connecting a Kubernetes cluster via the GitLab Agent for Kubernetes, and configuring scan cadence and target namespaces through the `config.yaml` file. It also describes how scan results are reported back to the GitLab UI for auditing and tracking vulnerabilities.