chore(deps): update dependency microsoft.extensions.configuration to v9

Author: renovate[bot]

src/ArwynFr.IntegrationTesting/ArwynFr.IntegrationTesting.csproj

@@ -25,7 +25,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.8" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="8.0.8" />
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />
     <PackageReference Include="OpenTelemetry.Exporter.InMemory" Version="1.9.0" />