chore(ci): update security workflows

[AlexanderBarabanov]

Summary

This PR adds security workflows:

• CodeQL - static code analyzer
• Dependency review on PR with dependency-review-action
• OpenSSF Scorecard check

Also, PR update Renovate configuration to cover actions from geti-ci repo.

[github-advanced-security]

You are seeing this message because GitHub Code Scanning has recently been set up for this repository, or this pull request contains the workflow file for the Code Scanning tool.

What Enabling Code Scanning Means:

• The 'Security' tab will display more code scanning analysis results (e.g., for the default branch).
• Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results.
• You will be able to see the analysis results for the pull request's branch on this overview once the scans have completed and the checks have passed.

For more information about GitHub Code Scanning, check out the documentation.

[Copilot]

Pull request overview

This PR strengthens repository security automation by adding dedicated CodeQL, Dependency Review, and OpenSSF Scorecard workflows, while updating existing security workflow permissions and Renovate handling for geti-ci actions.

Changes:

• Added new CodeQL, Dependency Review, and Scorecard workflows.
• Updated existing security scan workflows to avoid persisted checkout credentials and publish SARIF.
• Extended Renovate config for open-edge-platform/geti-ci action version parsing.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.semgrepignore	Excludes tests from Semgrep scans.
.github/workflows/security-scan.yml	Updates scan permissions, checkout credentials, and scan output behavior.
.github/workflows/scorecards.yml	Adds OpenSSF Scorecard analysis and SARIF upload.
.github/workflows/renovate-config-validator.yml	Disables persisted checkout credentials.
.github/workflows/dependency-review.yml	Adds dependency review checks on pull requests.
.github/workflows/codeql.yml	Adds CodeQL analysis for Actions and Python.
.github/renovate.json5	Adds regex versioning for geti-ci GitHub Actions updates.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.