chore(renovate): pin Update pin

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	digest	`b4ffde6` -> `1d96c77`
actions/upload-artifact	action	digest	`1746f4a` -> `6546280`

📅 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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sammcj / llamalink