Bump protobuf-net from 3.1.26 to 3.2.16

Bumps [protobuf-net](https://github.com/protobuf-net/protobuf-net) from 3.1.26 to 3.2.16.
- [Release notes](https://github.com/protobuf-net/protobuf-net/releases)
- [Changelog](https://github.com/protobuf-net/protobuf-net/blob/main/docs/releasenotes.md)
- [Commits](protobuf-net/protobuf-net@3.1.26...3.2.16)

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

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

Directory.Packages.props

@@ -21,7 +21,7 @@
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="1.1.1" />
     <PackageVersion Include="Moq" Version="4.18.4" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.2" />
-    <PackageVersion Include="protobuf-net" Version="3.1.26" />
+    <PackageVersion Include="protobuf-net" Version="3.2.16" />
     <PackageVersion Include="SonarAnalyzer.CSharp" Version="8.51.0.59060" />
     <PackageVersion Include="System.Text.Json" Version="7.0.1" />
     <PackageVersion Include="Utf8Json" Version="1.3.7" />