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

Conflicts:
- `.github/workflows/build-image.yml`:
  Fix erroneous deletion in a previous merge.
- `Gemfile`:
  Conflict caused by glitch-soc-only hCaptcha dependency
- `app/controllers/auth/sessions_controller.rb`:
  Minor conflict due to glitch-soc's theming system.
- `app/controllers/filters_controller.rb`:
  Minor conflict due to glitch-soc's theming system.
- `app/serializers/rest/status_serializer.rb`:
  Minor conflict due to glitch-soc having an extra `local_only` property

app/policies/domain_allow_policy.rb

@@ -1,6 +1,14 @@
 # frozen_string_literal: true
 
 class DomainAllowPolicy < ApplicationPolicy
+  def index?
+    admin?
+  end
+
+  def show?
+    admin?
+  end
+
   def create?
     admin?
   end