Update Grpc.Tools to 2.60.0 (#2336) (#2339)

Co-authored-by: James Newton-King <[email protected]>

Author: stanley-cheung

Directory.Packages.props

@@ -30,7 +30,7 @@
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="$(MicrosoftExtensionsPackageVersion)" />
 
     <!-- gRPC -->
-    <PackageVersion Include="Grpc.Tools" Version="2.59.0" />
+    <PackageVersion Include="Grpc.Tools" Version="2.60.0" />
     <PackageVersion Include="Grpc.Core" Version="2.46.6" />
     <PackageVersion Include="Grpc.Core.Api" Version="$(GrpcDotNetPackageVersion)"/>
     <PackageVersion Include="Grpc.Net.Client" Version="$(GrpcDotNetPackageVersion)" />