chore(m187): update versions for Release 13.1.0 (#16868)

FirebaseCoreExtension.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name             = 'FirebaseCoreExtension'
-    s.version          = '13.0.0'
+    s.version          = '13.1.0'
     s.summary          = 'Extended FirebaseCore APIs for Firebase product SDKs'
 
     s.description      = <<-DESC
@@ -39,5 +39,5 @@ Pod::Spec.new do |s|
       'PRODUCT_BUNDLE_IDENTIFIER' => 'com.google.firebase.FirebaseCoreExtension'
     }
 
-    s.dependency 'FirebaseCore', '~> 13.0.0'
+    s.dependency 'FirebaseCore', '~> 13.1.0'
   end