Arne Huang 2e8171d84c Pin actions/checkout to a commit SHA
Follow-up to #838: actions/checkout was the only third-party action
left on a mutable ref (@master). Pin it to v6.0.2's commit SHA, matching
the pattern used for docker/setup-qemu-action, docker/setup-buildx-action,
and docker/login-action.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-09 09:56:36 -07:00
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2026-05-09 09:56:36 -07:00