Bumps [html-validate](https://gitlab.com/html-validate/html-validate) from 8.2.0 to 8.3.0.
- [Release notes](https://gitlab.com/html-validate/html-validate/tags)
- [Changelog](https://gitlab.com/html-validate/html-validate/blob/master/CHANGELOG.md)
- [Commits](https://gitlab.com/html-validate/html-validate/compare/v8.2.0...v8.3.0)

---
updated-dependencies:
- dependency-name: html-validate
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Our documentation says Button components as `<button>` should always default `params.type` to `submit`:

> Type of `input` or `button` – `button`, `submit` or `reset`. Defaults to `submit`. This has no effect on `a` elements.

Rather than rely on `<button>` to implicitly default to `type="submit"` we should set it in the HTML