fix ServiceAccountJwtGcpClientImpl , bump-up google-cloud-logging to resolve java.lang.AbstractMethodError: com.google.api.gax.grpc.InstantiatingGrpcChannelProvider

Changes:
Added inner properties processing for Arrays of objects

The SNAPSHOT versions are not preserved in the package registry, and we can't be sure about what the build will be if we use
these. By using release versions, the build is more predictable and reliable