Add the ability to perform a dependency check scan.

[jcouture]

This PR is all about dependency check to find publicly disclosed vulnerabilities:

• Integrates a Gradle task to perform dependency check scans.
• Adds a GitHub Actions Workflow to weekly trigger the dependency check and upload the resulting SARIF (Static Analysis Results Interchange Format) file to GitHub Code Scanning functionality.

✌️

[mirego-builds]

🦀 Requesting reviewers for this pull request:

• @marcantoinefortier (contributor with 3 commits in the last 90 days and 28 commits overall)

[marcantoinefortier]

I think we should also write an entry in the README.md to document this new feature 🙂

[marcantoinefortier]

Thanks for the README info!