[v11] Update minimum platform versions for 11.0.0 (#13066)

FirebaseAuthTestingSupport.podspec

@@ -18,11 +18,11 @@ Pod::Spec.new do |s|
   }
 
   ios_deployment_target = '13.0'
-  osx_deployment_target = '10.13'
+  osx_deployment_target = '10.15'
   tvos_deployment_target = '13.0'
   watchos_deployment_target = '7.0'
 
-  s.swift_version = '5.3'
+  s.swift_version = '5.9'
 
   s.ios.deployment_target = ios_deployment_target
   s.osx.deployment_target = osx_deployment_target
@@ -39,7 +39,7 @@ Pod::Spec.new do |s|
     base_dir + 'Sources/**/*.swift',
   ]
 
-  s.dependency 'FirebaseAuth', '~> 10.22'
+  s.dependency 'FirebaseAuth', '~> 11.0'
 
   s.test_spec 'unit' do |unit_tests|
     unit_tests.scheme = { :code_coverage => true }