Pin gRPC-C++ version to exactly 0.0.5 (#2105)
Pin gRPC-C++ version to exactly 0.0.5 (#2105)

While gRPC-C++ is in its 0.* versions, any new version could potentially contain breaking changes. Make sure we only upgrade at our own pace.

firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk