Bump Microsoft.Extensions.Configuration.Json from 8.0.1 to 9.0.0

Bumps [Microsoft.Extensions.Configuration.Json](https://github.com/dotnet/runtime) from 8.0.1 to 9.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.1...v9.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Configuration.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

test/JanusGraph.Net.IntegrationTest/JanusGraph.Net.IntegrationTest.csproj

@@ -4,7 +4,7 @@
     <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="Testcontainers" Version="3.10.0" />
     <PackageReference Include="xunit" Version="2.9.2" />