Exclude old version of Google API client libraries
Exclude old version of Google API client libraries

Our com.google.apis:google-api-services-datastore-protobuf dependency
has a transitive dependency on a very old Google API client library.
This change suppresses that dependency and replaces it by depending
on a version that matches our other API dependencies.

elibixby/DataflowJavaSDK,elibixby/DataflowJavaSDK,joshualitt/DataflowJavaSDK,joshualitt/DataflowJavaSDK,nevillelyh/DataflowJavaSDK,sammcveety/DataflowJavaSDK,sammcveety/DataflowJavaSDK