Disable minimum release age for withastro/automation updates

[HiDeoo]

Description

This PR disables the minimum release age check recently added for withastro/automation updates.

While reviewing #3903, and even after retrying the PR, I was confused why the renovate/stability-days check was still pending, even though all the updates were made around 10 days ago (last change for withastro/automation - last release for pnpm/action-setup).

I'm not a Renovate expert, but I think I finally understand the reason:

• The withastro/automation is a digest update as we're using the latest commit SHA on the main branch in workflow files without a version tag (@<sha> # main).
• As documented here, for digest updates, having a release timestamp that can have minimumReleaseAge enforced is "Generally not supported".
• In Renovate 42, the absence of a release timestamp will be treated as if the release is not yet past the timestamp, which provides a safer default.

I'm not 100% sure, but I think this is the reason why the renovate/stability-days check is still pending, and will probably be always pending, preventing us from merging other updates.

A few extra points:

• If merging this PR and retrying Update github-actions #3903 does not resolve the issue, we can revert this PR and investigate further.
• If this works, it could still be a short-term solution and maybe a more long term solution would be to add proper releases with tags to withastro/automation.
• No matter what we end up doing, we will probably need to do the same to the Docs repo as I think chore(deps): update github-actions docs#13873 may have the same issue.

[changeset-bot]

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Latest commit: 29ab611

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