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

Conflicts:
- `.github/dependabot.yml`:
  Upstream made changes while we have dropped this file.
  Keep the file deleted.
- `.prettierignore`:
  Upstream made changes at the end of the file, where we
  had our extra lines.
  Just moved our extra lines back at the end.
- `app/serializers/initial_state_serializer.rb`:
  Upstream code style changes.
  Applied them.
- `app/services/backup_service.rb`:
  Upstream code style changes.
  Applied them.

spec/controllers/application_controller_spec.rb

@@ -27,7 +27,7 @@ describe ApplicationController, type: :controller do
       expect(response).to have_http_status(code)
     end
 
-    it "renders template for http" do
+    it 'renders template for http' do
       is_expected.to render_template("errors/#{code}", layout: 'error')
     end
   end
@@ -150,7 +150,7 @@ describe ApplicationController, type: :controller do
       end
 
       it 'does not store location for user if it is devise controller' do
-        @request.env["devise.mapping"] = Devise.mappings[:user]
+        @request.env['devise.mapping'] = Devise.mappings[:user]
         get 'create'
         expect(controller.stored_location_for(:user)).to be_nil
       end