Bump the Swagger UI console to 5.32.13

The version is a string literal used to build a CDN URL, not a dependency, so
dependabot never saw it and it sat at 4.15.5. Verified the three assets resolve
at 5.32.13, and the emitted init script uses only API unchanged across 4.x to
5.x.

Needs a manual look at the rendered page before release: nothing renders it in
CI, and the tests only assert the version string appears in the HTML.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>