OGSMOD-8159: Add security scan for 3rd parties

[laforel]

Description

Adding a security scan for 3rd party dependencies

Changes Made

• Added a new pipeline to run snyk security scan

Testing

Test Configuration

• Platform(s) tested: Ubuntu 24.04
• Build configuration(s): coverage
• Render delegate(s):
• OpenUSD version:

Tests Performed

• Existing unit tests pass
• Added/Updated unit test(s) for the changes
• Tested on multiple platforms
• Tested with different render delegates
• Performance testing (if applicable)

Documentation

• Code is self-documenting / well-commented
• Public API changes are documented with Doxygen comments

Checklist

• I have signed the Contributor License Agreement (CLA) (Corporate or Individual)
• My code follows the project's coding standards
• My changes generate no new warnings or errors

[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.