chore(deps): update dependency serilog.settings.configuration to v9

Author: renovate[bot]

test/Serilog.Sinks.UdpTests/Serilog.Sinks.UdpTests.csproj

@@ -18,7 +18,7 @@
     </PackageReference>
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
-    <PackageReference Include="Serilog.Settings.Configuration" Version="8.0.4" />
+    <PackageReference Include="Serilog.Settings.Configuration" Version="9.0.0" />
     <PackageReference Include="Shouldly" Version="4.3.0" />
     <PackageReference Include="xunit" Version="2.7.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.0">