fix(google-site-kit): handle new analytics option name

[adekbadek]

All Submissions:

• Have you followed the Newspack Contributing guideline?
• Does your code follow the WordPress' coding standards and VIP Go coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

Google Site Kit has update the Analytics settings option name in v.1.123.0, this PR ensures Newspack's overwrite of these settings is handled for the new option name, too.

How to test the changes in this Pull Request:

1. On release, set up a new site and set up Site Kit with Analytics
2. In Site Kit -> Settings -> Analytics, observe the "Excluded from Analytics" setting has "All logged-in users" value
3. Switch to this branch, observe the value is now "Users that can write posts"

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran tests with your changes locally?

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