fix(deps): bump @auth0/auth0-spa-js from 1.19.3 to 1.19.4 (#340)

Bumps [@auth0/auth0-spa-js](https://github.com/auth0/auth0-spa-js) from 1.19.3 to 1.19.4.
- [Release notes](https://github.com/auth0/auth0-spa-js/releases)
- [Changelog](https://github.com/auth0/auth0-spa-js/blob/master/CHANGELOG.md)
- [Commits](auth0/auth0-spa-js@v1.19.3...v1.19.4)

---
updated-dependencies:
- dependency-name: "@auth0/auth0-spa-js"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>