add changelog entry

CHANGELOG.md

@@ -6,12 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Unreleased
 
+### Added
+- Prometheus metrics exporting from `/api/v1/akkoma/metrics`
+
 ### Removed
 - Non-finch HTTP adapters
 - Legacy redirect from /api/pleroma/admin to /api/v1/pleroma/admin
 
 ### Changed
 - Return HTTP error 413 when uploading an avatar or banner that's above the configured upload limit instead of a 500.
+- Non-admin users now cannot register `admin` scope tokens (not security-critical, they didn't work before, but you _could_ create them)
 
 ### Upgrade notes
 - Ensure `config :tesla, :adapter` is either unset, or set to `{Tesla.Adapter.Finch, name: MyFinch}` in your .exs config