chore(deps): bump Grpc.Net.Client in /test/Liquid.Services.Grpc.Tests

Bumps [Grpc.Net.Client](https://github.com/grpc/grpc-dotnet) from 2.37.0 to 2.52.0.
- [Release notes](https://github.com/grpc/grpc-dotnet/releases)
- [Changelog](https://github.com/grpc/grpc-dotnet/blob/master/doc/release_process.md)
- [Commits](grpc/grpc-dotnet@v2.37.0...v2.52.0)

---
updated-dependencies:
- dependency-name: Grpc.Net.Client
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

test/Liquid.Services.Grpc.Tests/Liquid.Services.Grpc.Tests.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp3.1</TargetFramework>
@@ -26,7 +26,7 @@
     </PackageReference>
     <PackageReference Include="Grpc.AspNetCore" Version="2.37.0" />
     <PackageReference Include="Google.Protobuf" Version="3.17.0" />
-    <PackageReference Include="Grpc.Net.Client" Version="2.37.0" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.52.0" />
     <PackageReference Include="Grpc.Tools" Version="2.37.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>