chore(deps): update actions/checkout digest to eef6144

[cgrindel-self-hosted-renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	digest	692973e -> eef6144

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

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• If you want to rebase/retry this PR, check this box

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This PR has been generated by Renovate Bot.

[cgrindel-self-hosted-renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: undefined

Command failed: bazelisk run //:tidy_modified
/bin/sh: 1: bazelisk: not found