Bump Serilog from 2.11.0 to 2.12.0 (#191)

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] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/Akka.Logger.Serilog/Akka.Logger.Serilog.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Serilog" Version="2.11.0" />
+    <PackageReference Include="Serilog" Version="2.12.0" />
     <PackageReference Include="Akka" Version="$(AkkaVersion)" />
   </ItemGroup>