You need to run code scanning when files are modified in a specific directory.

GitHub Actions supports path filters for events such as push and pull_request. The paths: key allows a workflow to run only when changed files match one or more specified path patterns. For example, a workflow could use paths: - 'src/**' so that a code scanning job runs when files under the src directory are changed. The related paths-ignore: key performs the opposite function by excluding matching paths. Characters such as ** are glob-pattern components placed beneath paths:; they are not replacements for the paths keyword itself. Therefore, because the workflow must conditionally run when files in a particular directory change, line 3 should contain paths: followed by the applicable directory pattern.