Update Podfile

Author: a-maurice

messaging/integration_test/Podfile

@@ -5,11 +5,13 @@ use_frameworks! :linkage => :static
 target 'integration_test' do
   platform :ios, '13.0'
   pod 'Firebase/Messaging', '10.25.0'
+  pod 'Firebase/Functions', '10.25.0'
 end
 
 target 'integration_test_tvos' do
   platform :tvos, '12.0'
   pod 'Firebase/Messaging', '10.25.0'
+  pod 'Firebase/Functions', '10.25.0'
 end
 
 post_install do |installer|