Merge pull request #265857 from 999eagle/feat/invidious-scale

nixos/invidious: cleanup, allow for easy scaling and load balancing, add http3-ytproxy

nixos/doc/manual/release-notes/rl-2405.section.md

@@ -37,6 +37,8 @@ The pre-existing [services.ankisyncd](#opt-services.ankisyncd.enable) has been m
 
 - `k9s` was updated to v0.29. There have been breaking changes in the config file format, check out the [changelog](https://github.com/derailed/k9s/releases/tag/v0.29.0) for details.
 
+- Invidious has changed its default database username from `kemal` to `invidious`. Setups involving an externally provisioned database (i.e. `services.invidious.database.createLocally == false`) should adjust their configuration accordingly. The old `kemal` user will not be removed automatically even when the database is provisioned automatically.(https://github.com/NixOS/nixpkgs/pull/265857)
+
 - `mkosi` was updated to v19. Parts of the user interface have changed. Consult the
   [release notes](https://github.com/systemd/mkosi/releases/tag/v19) for a list of changes.