build(deps): bump Elastic.Serilog.Sinks

Bumps [Elastic.Serilog.Sinks](https://github.com/elastic/ecs-dotnet) from 8.12.2 to 8.12.3.
- [Release notes](https://github.com/elastic/ecs-dotnet/releases)
- [Commits](elastic/ecs-dotnet@8.12.2...8.12.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/Intility.Extensions.Logging.Elasticsearch/Intility.Extensions.Logging.Elasticsearch.csproj

@@ -27,7 +27,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Elastic.Serilog.Sinks" Version="8.12.2" />
+    <PackageReference Include="Elastic.Serilog.Sinks" Version="8.12.3" />
   </ItemGroup>
 
 </Project>