Update BTCPay Server to v2.0.1

[dennisreimann]

I simply updated the images and could not test this further. Maybe someone can help verify that the upgrade works in production.

[github-actions]

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Severity	File	Description
ℹ️	btcpay-server/docker-compose.yml	Potentially using unsafe user in service "postgres": The default container user "root" can lead to security vulnerabilities. If you are using the root user, please try to specify a different user (e.g. "1000:1000") in the compose file or try to set the UID/PUID and GID/PGID environment variables to 1000.

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❌	Error: This must be resolved before this PR can be merged.
⚠️	Warning: This is highly encouraged to be resolved, but is not strictly mandatory.
ℹ️	Info: This is just for your information.

[nmfretz]

Thanks for this update @dennisreimann! 2.0 is looking great 👌

I have updated the app manifest with version and release notes so that existing installs are notified of an available update like so:

I made sure to include a warning at the top regarding integration/plugin/api compatibility.

I have reviewed and tested a fresh install and app update.

[dennisreimann]

Looking good! Thanks for including the disclaimer 🙌