Bump protobuf-net from 3.2.46 to 3.2.52

Bumps [protobuf-net](https://github.com/protobuf-net/protobuf-net) from 3.2.46 to 3.2.52.
- [Release notes](https://github.com/protobuf-net/protobuf-net/releases)
- [Changelog](https://github.com/protobuf-net/protobuf-net/blob/main/docs/releasenotes.md)
- [Commits](https://github.com/protobuf-net/protobuf-net/compare/3.2.46...3.2.52)

---
updated-dependencies:
- dependency-name: protobuf-net
  dependency-version: 3.2.52
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

DepotDownloader/DepotDownloader.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net9.0</TargetFramework>
@@ -25,7 +25,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="protobuf-net" Version="3.2.46" />
+    <PackageReference Include="protobuf-net" Version="3.2.52" />
     <PackageReference Include="QRCoder" Version="1.6.0" />
     <PackageReference Include="SteamKit2" Version="3.0.2" />
   </ItemGroup>