Update all versions for Headers API (#14257)
Update all versions for Headers API (#14257)

* Update Firefox Android versions for Headers API

This PR updates and corrects the real values for Firefox Android for the `Headers` API, based upon results from the [mdn-bcd-collector](https://mdn-bcd-collector.appspot.com) project (v4.0.0).

Tests Used: https://mdn-bcd-collector.appspot.com/tests/api/Headers

* Mirror Chrome data

* Mirror Chrome data

* Correct Fenix data
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data