Bump Serilog from 2.11.0 to 2.12.0

Bumps [Serilog](https://github.com/serilog/serilog) from 2.11.0 to 2.12.0.
- [Release notes](https://github.com/serilog/serilog/releases)
- [Changelog](https://github.com/serilog/serilog/blob/dev/CHANGES.md)
- [Commits](serilog/serilog@v2.11.0...v2.12.0)

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

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

tests/JustSaying.Benchmark/JustSaying.Benchmark.csproj

@@ -10,7 +10,7 @@
       <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="$(MicrosoftExtensionsDependencyInjectionVersion)" />
       <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="$(MicrosoftExtensionsDependencyInjectionVersionAbstraction)" />
       <PackageReference Include="morelinq" Version="3.3.2" />
-      <PackageReference Include="Serilog" Version="2.11.0" />
+      <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="5.1.1" />