Bump Serilog and Serilog.Settings.Configuration

Bumps [Serilog](https://github.com/serilog/serilog) and [Serilog.Settings.Configuration](https://github.com/serilog/serilog-settings-configuration). These dependencies needed to be updated together.

Updates `Serilog` from 4.2.0 to 4.2.0
- [Release notes](https://github.com/serilog/serilog/releases)
- [Commits](serilog/serilog@v4.2.0...v4.2.0)

Updates `Serilog.Settings.Configuration` from 8.0.4 to 9.0.0
- [Release notes](https://github.com/serilog/serilog-settings-configuration/releases)
- [Changelog](https://github.com/serilog/serilog-settings-configuration/blob/dev/CHANGES.md)
- [Commits](serilog/serilog-settings-configuration@v8.0.4...v9.0.0)

---
updated-dependencies:
- dependency-name: Serilog
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Serilog.Settings.Configuration
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

App/Directory.Packages.props

@@ -9,7 +9,7 @@
     <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="9.0.0" />
     <PackageVersion Include="Serilog" Version="4.2.0" />
     <PackageVersion Include="Serilog.Extensions.Hosting" Version="8.0.0" />
-    <PackageVersion Include="Serilog.Settings.Configuration" Version="8.0.4" />
+    <PackageVersion Include="Serilog.Settings.Configuration" Version="9.0.0" />
     <PackageVersion Include="Serilog.Sinks.Console" Version="6.0.0" />
     <PackageVersion Include="Swashbuckle.AspNetCore" Version="7.1.0" />
   </ItemGroup>