Bump protobuf-net from 3.2.52 to 3.2.56 (#42)

---
updated-dependencies:
- dependency-name: protobuf-net
  dependency-version: 3.2.56
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -6,7 +6,7 @@
 
   <ItemGroup>
     <PackageVersion Include="Google.Protobuf" Version="3.31.1" />
-	<PackageVersion Include="protobuf-net" Version="3.2.52" />
+	<PackageVersion Include="protobuf-net" Version="3.2.56" />
   </ItemGroup>
 
 </Project>