[PrivacyBadger] Privacy Badger version 2021.6.8 released

[Alexei]

As always, you can get it from https://privacybadger.org/ or from your 
browser's add-on gallery.

Notable updates:

* Disabled Google's Federated Learning of Cohorts (FLoC). To learn more, 
visit https://www.eff.org/deeplinks/2021/03/googles-floc-terrible-idea
* Improved tracker detection and blocking by looking up known CNAME 
tracker aliases. Thanks to AdGuard for providing the CNAME DNS data 
behind this feature.
* You can now see in the popup when first-party protections such as link 
unwrapping are active on the site you are on
* Fixed various site breakages
* Added Greek and Hungarian translations
* Improved translations (Simplified Chinese, Esperanto, Hebrew, Korean, 
European Portuguese, Turkish, Swedish)

For further details, consult our release notes on GitHub:
https://github.com/EFForg/privacybadger/releases/tag/release-2021.6.8