ci: harden workflows for zizmor (pin actions, fix template injection) - #751
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The repo's zizmor gate enforces a blanket policy requiring every GitHub Actions `uses:` reference to be pinned to a full commit SHA rather than a floating tag. pr-workflow.yaml referenced three actions by major-version tag in five places, failing the mandatory unpinned-uses check. Pin each to the exact commit its tag currently resolves to, keeping the semver in a trailing comment so Dependabot and humans still see the version: actions/checkout@v5 -> fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 (v5.1.0) actions/setup-go@v5 -> 40f1582b2485089dde7abd97c1529aa768e1baff (v5.6.0) actions/cache@v4 -> 0057852bfaa89a56745cba8c7296529d2fc39830 (v4.3.0) No behavior change; the pinned commits are the current tips of those tags.
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What this PR does / why we need it
The zizmor gate has two mandatory checks failing on the workflow files:
unpinned-usesandtemplate-injection. This PR resolves both.Pin every GitHub Actions
uses:reference to a full commit SHA, keepingthe semver in a trailing comment for readability and Dependabot:
Fix template injection in pr-workflow.yaml:
${{ matrix.auth-mode }}and${{ needs.e2e-test-matrix.result }}were interpolated directly intorun:shell blocks. Move each into an
env:var and reference it as a quotedshell variable so the expansion cannot inject code.
No functional behavior change.
Testing
zizmor --persona=pedanticon both workflow files: zero findings for anymandatory check (unpinned-uses, template-injection, etc.).