github-actions: bump actions/download-artifact from 4 to 8

[dependabot]

Bumps actions/download-artifact from 4 to 8.

Release notes

Sourced from actions/download-artifact's releases.

v8.0.0

v8 - What's new

[!IMPORTANT] actions/download-artifact@v8 has been migrated to an ESM module. This should be transparent to the caller but forks might need to make significant changes.

[!IMPORTANT] Hash mismatches will now error by default. Users can override this behavior with a setting change (see below).

Direct downloads

To support direct uploads in actions/upload-artifact, the action will no longer attempt to unzip all downloaded files. Instead, the action checks the Content-Type header ahead of unzipping and skips non-zipped files. Callers wishing to download a zipped file as-is can also set the new skip-decompress parameter to true.

Enforced checks (breaking)

A previous release introduced digest checks on the download. If a download hash didn't match the expected hash from the server, the action would log a warning. Callers can now configure the behavior on mismatch with the digest-mismatch parameter. To be secure by default, we are now defaulting the behavior to error which will fail the workflow run.

ESM

To support new versions of the @actions/* packages, we've upgraded the package to ESM.

What's Changed

• Don't attempt to un-zip non-zipped downloads by @​danwkennedy in actions/download-artifact#460
• Add a setting to specify what to do on hash mismatch and default it to error by @​danwkennedy in actions/download-artifact#461

Full Changelog: actions/download-artifact@v7...v8.0.0

v7.0.0

v7 - What's new

[!IMPORTANT] actions/download-artifact@v7 now runs on Node.js 24 (runs.using: node24) and requires a minimum Actions Runner version of 2.327.1. If you are using self-hosted runners, ensure they are updated before upgrading.

Node.js 24

This release updates the runtime to Node.js 24. v6 had preliminary support for Node 24, however this action was by default still running on Node.js 20. Now this action by default will run on Node.js 24.

What's Changed

• Update GHES guidance to include reference to Node 20 version by @​patrikpolyak in actions/download-artifact#440
• Download Artifact Node24 support by @​salmanmkc in actions/download-artifact#415
• fix: update @​actions/artifact to fix Node.js 24 punycode deprecation by @​salmanmkc in actions/download-artifact#451
• prepare release v7.0.0 for Node.js 24 support by @​salmanmkc in actions/download-artifact#452

New Contributors

• @​patrikpolyak made their first contribution in actions/download-artifact#440
• @​salmanmkc made their first contribution in actions/download-artifact#415

Full Changelog: actions/download-artifact@v6.0.0...v7.0.0

v6.0.0

... (truncated)

Commits

• 3e5f45b Add regression tests for CJK characters (#471)
• e6d03f6 Add a regression test for artifact name + content-type mismatches (#472)
• 70fc10c Merge pull request #461 from actions/danwkennedy/digest-mismatch-behavior
• f258da9 Add change docs
• ccc058e Fix linting issues
• bd7976b Add a setting to specify what to do on hash mismatch and default it to error
• ac21fcf Merge pull request #460 from actions/danwkennedy/download-no-unzip
• 15999bf Add note about package bumps
• 974686e Bump the version to v8 and add release notes
• fbe48b1 Update test names to make it clearer what they do
• Additional commits viewable in compare view

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[bgentry]

🤖 Codex review: Security review looks good to me.

I reviewed this as a dependency-upgrade supply-chain/security pass for the actions/download-artifact update at head f6c0705acadd80b209a922da608c7da999876fd1.

Scope reviewed:

• Workflow changes in docker-riverproui.yaml and docker-riverui.yaml.
• Upstream action trust and behavior change from actions/download-artifact@v4 to @v8.
• Security-relevant action metadata changes, including runtime, artifact decompression, digest mismatch behavior, permissions, and credential exposure paths.
• CI status, with the known Dependabot riverproui image-publish/OIDC failure treated separately from dependency safety.

No blocking supply-chain issue found. The action remains in the official actions GitHub org, the workflow references remain in the same action repository, and this PR does not add permissions, secrets, registries, or new workflow steps.

The notable upstream action changes are the expected Node runtime move from Node 20 to Node 24 and new artifact handling inputs. The digest-mismatch default is error, which is security-positive for these digest artifact downloads. Existing workflow inputs are unchanged.

The remaining failed riverproui image checks are consistent with the known Dependabot OIDC/publish limitation, while the ordinary JS/Go checks and riverui image jobs passed.