chore(renovate): pin Update actions/setup-go digest to 0a12ed9

This PR contains the following updates:

Package	Type	Update	Change
actions/setup-go	action	digest	`cdcb360` -> `0a12ed9`

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🚦 Automerge: Enabled.

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

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sammcj / gollama