Bump Serilog.Sinks.Seq from 5.2.0 to 5.2.1

Bumps [Serilog.Sinks.Seq](https://github.com/serilog/serilog-sinks-seq) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/serilog/serilog-sinks-seq/releases)
- [Commits](datalust/serilog-sinks-seq@v5.2.0...v5.2.1)

---
updated-dependencies:
- dependency-name: Serilog.Sinks.Seq
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

tests/JustSaying.Benchmark/JustSaying.Benchmark.csproj

@@ -13,7 +13,7 @@
       <PackageReference Include="Serilog" Version="2.12.0" />
       <PackageReference Include="Serilog.Extensions.Logging" Version="3.1.0" />
       <PackageReference Include="Serilog.Sinks.Console" Version="4.1.0" />
-      <PackageReference Include="Serilog.Sinks.Seq" Version="5.2.0" />
+      <PackageReference Include="Serilog.Sinks.Seq" Version="5.2.1" />
       <PackageReference Include="SerilogTimings" Version="3.0.1" />
     </ItemGroup>