## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES
## What kind of change does this PR introduce?
Refactor
## What is the current behavior?
The `/incident-banner` endpoint is implemented using the Pages Router.
## What is the new behavior?
The `/incident-banner` endpoint is moved to the App Router, enabling
caching of the upstream fetch. This does not turn on the querying from
the frontend yet, making that a separate PR so we can revert easily if
needed.
## Additional context
