Bump Serilog.Sinks.Elasticsearch

Bumps [Serilog.Sinks.Elasticsearch](https://github.com/serilog-contrib/serilog-sinks-elasticsearch) from 8.4.1 to 9.0.0.
- [Release notes](https://github.com/serilog-contrib/serilog-sinks-elasticsearch/releases)
- [Changelog](https://github.com/serilog-contrib/serilog-sinks-elasticsearch/blob/dev/CHANGES.md)
- [Commits](https://github.com/serilog-contrib/serilog-sinks-elasticsearch/commits/v9.0.0)

---
updated-dependencies:
- dependency-name: Serilog.Sinks.Elasticsearch
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

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

@@ -14,7 +14,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Serilog.Sinks.Elasticsearch" Version="8.4.1" />
+		<PackageReference Include="Serilog.Sinks.Elasticsearch" Version="9.0.0" />
 	</ItemGroup>
 
 	<ItemGroup>