Bump Google.Protobuf from 3.6.1 to 3.15.0 in /Private/CloudStorePlayground/GrpcCopyTesting/ProtoGen#2

dependabot[bot] wants to merge 1 commit intomasterMicrosoft-Android/BuildXL:masterfrom

dependabot/nuget/Private/CloudStorePlayground/GrpcCopyTesting/ProtoGen/Google.Protobuf-3.15.0Microsoft-Android/BuildXL:dependabot/nuget/Private/CloudStorePlayground/GrpcCopyTesting/ProtoGen/Google.Protobuf-3.15.0Copy head branch name to clipboard