Policy templates for Firefox 76 and Firefox ESR 68.8

The README that corresponds to this release is:

https://github.com/mozilla/policy-templates/blob/13c3dd95ff4b33d7686f02f2e706be186439930c/README.md

This release provides support for the following new policies:

DisabledCiphers

This release updates the following policies:

Permissions - Added support for Autoplay->Default and Autoplay->Locked