chore(deps): Update .net deps (#99)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [Google.Protobuf](https://togithub.com/protocolbuffers/protobuf) |
nuget | patch | `3.24.1` -> `3.24.2` |
| [Grpc.Net.Client](https://togithub.com/grpc/grpc-dotnet) | nuget |
minor | `2.55.0` -> `2.56.0` |
| [Microsoft.NET.Test.Sdk](https://togithub.com/microsoft/vstest) |
nuget | patch | `17.7.1` -> `17.7.2` |

---

### Release Notes

<details>
<summary>grpc/grpc-dotnet (Grpc.Net.Client)</summary>

###
[`v2.56.0`](https://togithub.com/grpc/grpc-dotnet/releases/tag/v2.56.0)

#### What's Changed

- Update version to 2.56.0 (on v2.56.x branch) by
[@&#8203;jtattermusch](https://togithub.com/jtattermusch) in
[grpc/grpc-dotnet#2251

**Full Changelog**:
grpc/grpc-dotnet@v2.56.0-pre2...v2.56.0

</details>

<details>
<summary>microsoft/vstest (Microsoft.NET.Test.Sdk)</summary>

###
[`v17.7.2`](https://togithub.com/microsoft/vstest/releases/tag/v17.7.2)

#### What's Changed

- Fix cannot find System.Text.Json by
[@&#8203;nohwnd](https://togithub.com/nohwnd) in
[microsoft/vstest#4669

**Full Changelog**:
microsoft/vstest@v17.7.1...v17.7.2

</details>

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src/Sdk.UnitTests/Sdk.UnitTests.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.1" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
         <PackageReference Include="NUnit" Version="3.13.3" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
         <PackageReference Include="NUnit.Analyzers" Version="3.6.1" />

src/Sdk/sdk.csproj

@@ -16,8 +16,8 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Google.Protobuf" Version="3.24.1" />
+        <PackageReference Include="Google.Protobuf" Version="3.24.2" />
         <PackageReference Include="Grpc" Version="2.46.6" />
-        <PackageReference Include="Grpc.Net.Client" Version="2.55.0" />
+        <PackageReference Include="Grpc.Net.Client" Version="2.56.0" />
     </ItemGroup>
 </Project>