Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `.prettierignore`:
  Upstream added a line at the end of the file, while glitch-soc had its own
  extra lines.
  Took upstream's change.
- `CONTRIBUTING.md`:
  We have our custom CONTRIBUTING.md quoting upstream. Upstream made changes.
  Ported upstream changes.
- `app/controllers/application_controller.rb`:
  Upstream made code style changes in a method that is entirely replaced
  in glitch-soc.
  Ignored the change.
- `app/models/account.rb`:
  Code style changes textually close to glitch-soc-specific changes.
  Ported upstream changes.
- `lib/sanitize_ext/sanitize_config.rb`:
  Upstream code style changes.
  Ignored them.

app/controllers/api/v1/notifications_controller.rb

@@ -28,7 +28,7 @@ class Api::V1::NotificationsController < Api::BaseController
   end
 
   def dismiss
-    current_account.notifications.find_by!(id: params[:id]).destroy!
+    current_account.notifications.find(params[:id]).destroy!
     render_empty
   end