feat: Ability to update avatars from super admin (#7264)

- Ability to update user avatars from super admin
- Ability to update bot avatars from super admin

fixes: #7060

spec/factories/agent_bots.rb

@@ -9,5 +9,9 @@ FactoryBot.define do
     trait :skip_validate do
       to_create { |instance| instance.save(validate: false) }
     end
+
+    trait :with_avatar do
+      avatar { fixture_file_upload(Rails.root.join('spec/assets/avatar.png'), 'image/png') }
+    end
   end
 end

spec/factories/users.rb

@@ -26,7 +26,7 @@ FactoryBot.define do
     end
 
     trait :with_avatar do
-      avatar { Rack::Test::UploadedFile.new('spec/assets/avatar.png', 'image/png') }
+      avatar { fixture_file_upload(Rails.root.join('spec/assets/avatar.png'), 'image/png') }
     end
 
     trait :administrator do