Summary

• Remove polyfill.io from examples, no code changes

What's Changed

• Changes for 12.3.3 by @ahocevar in https://github.com/openlayers/ol-mapbox-style/pull/1154
• Remove polyfill io by @orangemug in https://github.com/openlayers/ol-mapbox-style/pull/1169

Full Changelog: https://github.com/openlayers/ol-mapbox-style/compare/v12.3.3...v12.3.4