Update GDT dep

Author: paulb777

FirebaseAppDistribution.podspec

@@ -32,7 +32,7 @@ iOS SDK for App Distribution for Firebase.
   s.dependency 'GoogleUtilities/AppDelegateSwizzler', '~> 7.0'
   s.dependency 'GoogleUtilities/UserDefaults', '~> 7.0'
   s.dependency 'FirebaseInstallations', '~> 7.0'
-  s.dependency 'GoogleDataTransport', '~> 8.0'
+  s.dependency 'GoogleDataTransport', '~> 8.4'
 
   s.pod_target_xcconfig = {
     'GCC_C_LANGUAGE_STANDARD' => 'c99',

FirebaseCoreDiagnostics.podspec

@@ -56,7 +56,7 @@ non-Cocoapod integration. This library also respects the Firebase global data co
 
   s.framework = 'Foundation'
 
-  s.dependency 'GoogleDataTransport', '~> 8.0'
+  s.dependency 'GoogleDataTransport', '~> 8.4'
   s.dependency 'GoogleUtilities/Environment', '~> 7.0'
   s.dependency 'GoogleUtilities/Logger', '~> 7.0'
   s.dependency 'nanopb', '~> 2.30908.0'

FirebaseCrashlytics.podspec

@@ -54,7 +54,7 @@ Pod::Spec.new do |s|
   s.dependency 'FirebaseCore', '~> 7.0'
   s.dependency 'FirebaseInstallations', '~> 7.0'
   s.dependency 'PromisesObjC', '~> 1.2'
-  s.dependency 'GoogleDataTransport', '~> 8.0'
+  s.dependency 'GoogleDataTransport', '~> 8.4'
   s.dependency 'nanopb', '~> 2.30908.0'
 
   s.libraries = 'c++', 'z'

FirebaseMLModelDownloader.podspec

@@ -38,7 +38,7 @@ Pod::Spec.new do |s|
   s.framework = 'Foundation'
   s.dependency 'FirebaseCore', '~> 7.6'
   s.dependency 'FirebaseInstallations', '~> 7.6'
-  s.dependency 'GoogleDataTransport', '~> 8.3'
+  s.dependency 'GoogleDataTransport', '~> 8.4'
   # TODO: Revisit this dependency
   s.dependency 'GoogleUtilities/Logger', '~> 7.2'
   s.dependency 'SwiftProtobuf', '~> 1.0'

FirebasePerformance.podspec

@@ -60,7 +60,7 @@ Firebase Performance library to measure performance of Mobile and Web Apps.
   s.dependency 'FirebaseCore', '~> 7.0'
   s.dependency 'FirebaseInstallations', '~> 7.0'
   s.dependency 'FirebaseRemoteConfig', '~> 7.0'
-  s.dependency 'GoogleDataTransport', '~> 8.2'
+  s.dependency 'GoogleDataTransport', '~> 8.4'
   s.dependency 'GoogleUtilities/Environment', '~> 7.0'
   s.dependency 'GoogleUtilities/ISASwizzler', '~> 7.0'
   s.dependency 'GoogleUtilities/MethodSwizzler', '~> 7.0'
@@ -71,7 +71,6 @@ Firebase Performance library to measure performance of Mobile and Web Apps.
     unit_tests.scheme = { :code_coverage => true }
     unit_tests.source_files = [
       'FirebasePerformance/Tests/Unit/**/*.{m,h,plist}',
-      'GoogleDataTransport/GDTCORTests/Common/**/*.[hm]',
     ]
     unit_tests.resources = ['FirebasePerformance/Tests/Unit/Server/*File']
     unit_tests.requires_arc = true