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codex/.github
Adam Perry @ OpenAI 9100b9c3d3 Pin Linux artifact signing to Cosign v3.1.4 (#56288)
## Why

Existing release consumers verify v2 signature bundles, so the Cosign upgrade must preserve that format.

## What changed

- Upgrade `sigstore/cosign-installer` to `v4.1.2` and explicitly install Cosign `v3.1.4`.
- Provide a pinned Sigstore trusted root for offline installer verification.
- Check the installed Cosign version before signing and disable the new bundle format and signing configuration.

GitOrigin-RevId: c54578c904ed890d013d79169164e662b57d3ee5
2026-10-22 23:05:16 +00:00
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