XS✔ ◾ CodeQL configuration

[muiriswoulfe]

Summary

This changes the CodeQL validation job, to allow runs from different branches to be aggregated. This avoids conflicts that lead to warning messages during some builds.

Testing

Test Types

• Unit tests
• Manual tests

[github-actions]

PR Metrics

✔ Thanks for keeping your pull request small.
✔ Thanks for adding tests.

	Lines
Product Code	-
Test Code	-
Subtotal	-
Ignored Code	15
Total	15

Metrics computed by PR Metrics. Add it to your Azure DevOps and GitHub PRs!

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.