Bump Grpc.Core from 2.36.0 to 2.36.4 (#792)

Bumps [Grpc.Core](https://github.com/grpc/grpc) from 2.36.0 to 2.36.4.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](https://github.com/grpc/grpc/commits)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/Proto.Remote/Proto.Remote.csproj

@@ -6,7 +6,7 @@
     <TargetFrameworks>netstandard2.1;net5.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Grpc.Core" Version="2.36.0" />
+    <PackageReference Include="Grpc.Core" Version="2.36.4" />
     <PackageReference Include="Grpc.HealthCheck" Version="2.36.0" />
     <PackageReference Include="Grpc.Tools" Version="2.36.0" PrivateAssets="All" />
   </ItemGroup>