Release NGF 1.6.1

[lucacome]

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[github-actions]

✅ All required contributors have signed the F5 CLA for this PR. Thank you!
_{Posted by the CLA Assistant Lite bot.}

[lucacome]

I have hereby read the F5 CLA and agree to its terms

[github-actions]

✅ Deploy Preview will be available once build job completes!

Name	Link
😎 Deploy Preview	https://frontdoor-test-docs.nginx.com/previews/docs/172/

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[sjberman]

Hm, doesn't seem like the deploy preview updates with new commits. I don't see the upstream settings policy guide in the rendered docs.

[lucacome]

@sjberman fixed it