security: Pin GitHub Actions to specific git revisions - #79
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Summary
This change improves our supply chain security by pinning all third-party GitHub Actions to specific git revisions using pinact.
Why this matters
When GitHub Actions are referenced by mutable tags like
@v3or@main, the actual code being executed can change without notice. This creates security risks:What changed
@{sha}) instead of mutable tagsmdsolorganization are left untouched via pinact's--exclude '^mdsol/'flagpinact runto refresh SHAs against the version commentsTesting
This change does not modify the behavior of the workflows, only pins them to specific revisions. Workflows will continue to function as before, but with improved security and reproducibility.
References