prevent validator sessions from being created in test environment

lib/inferno/config/boot/validator.rb

@@ -6,6 +6,8 @@
     # so skipping it on workers will start it only once from the "web" process
     next if Sidekiq.server?
 
+    next if ENV['APP_ENV'] == 'test'
+
     Inferno::Repositories::TestSuites.new.all.each do |suite|
       suite.fhir_validators.each do |name, validators|
         validators.each_with_index do |validator, index|