Update dependency @testing-library/user-event to v13.5.0

Editor assessment

The right type for the right layer: `chore(deps)` signals a test-utility bump that no runtime consumer will ever feel. The subject is a model of automation hygiene — package name, exact target 'v13.5.0', imperative verb, lowercase, no trailing punctuation — and its length leaves ample room in any log view. Omitting a body is fine here because user-event's own changelog travels with the PR, but reviewers should confirm nothing behavioral changed for existing tests at this minor-adjacent version. Structurally, the message satisfies every rule the spec sets for headers.