Policy templates for Firefox 146 and Firefox ESR 140.6

Note: While these templates will work for Firefox ESR 128, they might contain new policies that are not in Firefox ESR 128. If you need to manage Firefox ESR 128, you should use v6.11

I'm no longer using a versioned README for documentation, I'm using a GitHub page which is available at:

https://mozilla.github.io/policy-templates/

You can search on the corresponding version of Firefox (146 in this case) to see version specific policy changes.

If you need to see version specific documentation, you can use this link:

https://github.com/mozilla/policy-templates/blob/v7.6/docs/index.md

Documentation updates

The ExtensionSettings documentation has been updated to clarify how allowed_types interacts with installation_mode and to better describe install_url.

New policies

BrowserDataBackup - Disable backup or restore of profile data.

Updated policies

UserMessaging - FirefoxLabs can now be set regardless of the status of DisableTelemetry or DisableStudies.

For more information about Firefox 146, see the enterprise release notes.

Thanks to @de-es, @drubino-mozilla and @dotproto for contributing to this release.