deps: bump @auth0/auth0-spa-js from 2.0.8 to 2.1.0 (#859)

Bumps [@auth0/auth0-spa-js](https://github.com/auth0/auth0-spa-js) from 2.0.8 to 2.1.0.
- [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@v2.0.8...v2.1.0)

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

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