For an easy upgrade experience of this file, do the following.
After all the other files have been upgraded, run yarn install
and cd ios; pod install; cd ..
.
This will cause all the Pods to be connected. After that, open the workspace file in the ios
directory, called something like MyApp.xcworkspace
This workspace contains your original project, as well as the Pods
project. Expand your project and find the Libraries
directory.