Bump coverlet.collector from 6.0.3 to 6.0.4 in /hello-grpc-csharp (#275)

Author: github-actions[bot]

Diff for: hello-grpc-csharp/HelloUT/HelloUT.csproj

@@ -18,7 +18,7 @@
         <!-- https://www.nuget.org/packages/NUnit.Analyzers -->
         <PackageReference Include="NUnit.Analyzers" Version="4.6.0" />
         <!-- https://www.nuget.org/packages/coverlet.collector -->
-        <PackageReference Include="coverlet.collector" Version="6.0.3" />
+        <PackageReference Include="coverlet.collector" Version="6.0.4" />
         <ProjectReference Include="..\Common\Common.csproj" />
     </ItemGroup>