Revert stencil version until tests work again

Editor assessment

The subject states both the action and the condition: the stencil version is reverted until tests work again, which embeds the rollback's justification in the line itself. chore(dependencies) is the right type and scope for a version revert. No body, and none is needed when the reason is already stated; the honesty about the failing tests is welcome. Wording is compact and clean. A clear, trustworthy message for a temporary measure.