Bump Akka.Logger.Serilog from 1.5.12 to 1.5.12.1 (#374)

Bumps [Akka.Logger.Serilog](https://github.com/akkadotnet/Akka.Logger.Serilog) from 1.5.12 to 1.5.12.1.
- [Release notes](https://github.com/akkadotnet/Akka.Logger.Serilog/releases)
- [Changelog](https://github.com/akkadotnet/Akka.Logger.Serilog/blob/dev/RELEASE_NOTES.md)
- [Commits](https://github.com/akkadotnet/Akka.Logger.Serilog/commits)

---
updated-dependencies:
- dependency-name: Akka.Logger.Serilog
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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src/Examples/Akka.Hosting.LoggingDemo/Akka.Hosting.LoggingDemo.csproj

@@ -11,7 +11,7 @@
  </ItemGroup>
 
  <ItemGroup>
- <PackageReference Include="Akka.Logger.Serilog" Version="1.5.12" />
+ <PackageReference Include="Akka.Logger.Serilog" Version="1.5.12.1" />
  <PackageReference Include="Serilog.Sinks.Console" Version="4.1.0" />
  </ItemGroup>
 </Project>