Update Grpc.Core and Google.Protobuf dependencies (#1031)

Author: JamesNK

build/dependencies.props

@@ -1,9 +1,9 @@
 <Project>
   <PropertyGroup>
     <BenchmarkDotNetPackageVersion>0.12.1</BenchmarkDotNetPackageVersion>
-    <GoogleProtobufPackageVersion>3.12.2</GoogleProtobufPackageVersion>
+    <GoogleProtobufPackageVersion>3.13.0</GoogleProtobufPackageVersion>
     <GrpcDotNetPackageVersion>2.30.0</GrpcDotNetPackageVersion>  <!-- Used by example projects -->
-    <GrpcPackageVersion>2.31.0-pre2</GrpcPackageVersion>
+    <GrpcPackageVersion>2.32.0-dev202008271149</GrpcPackageVersion>
     <MicrosoftAspNetCoreAppPackageVersion>3.1.3</MicrosoftAspNetCoreAppPackageVersion>
     <MicrosoftAspNetCoreBlazorPackageVersion>5.0.0-rc.1.20381.8</MicrosoftAspNetCoreBlazorPackageVersion>
     <MicrosoftAspNetCoreBlazor31PackageVersion>3.2.0</MicrosoftAspNetCoreBlazor31PackageVersion>

examples/Worker/Server/Server.csproj

@@ -12,6 +12,7 @@
 
     <!-- This is required to avoid a build server error when using a preview version of Grpc.Tools -->
     <PackageReference Include="Grpc.Tools" Version="$(GrpcPackageVersion)" PrivateAssets="All" />
+    <PackageReference Include="Google.Protobuf" Version="$(GoogleProtobufPackageVersion)" />
   </ItemGroup>
 
 </Project>

global.json

@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "5.0.100-rc.1.20420.14"
+    "version": "5.0.100-rc.1.20425.3"
   }
 }