chore(deps): pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
changesets/action	action	pinDigest	→ 41adcfa
node (source)	engines	pin	>=20 → v25.9.0

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[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

Post-upgrade command 'pnpm format' has not been added to the allowed list in allowedCommands