Bump the microsoftextensions group with 2 updates

Bumps the microsoftextensions group with 2 updates: [Microsoft.Extensions.Configuration.EnvironmentVariables](https://github.com/dotnet/runtime) and [Microsoft.Extensions.Configuration.Json](https://github.com/dotnet/runtime).


Updates `Microsoft.Extensions.Configuration.EnvironmentVariables` from 8.0.0 to 9.0.0
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.0...v9.0.0)

Updates `Microsoft.Extensions.Configuration.Json` 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.EnvironmentVariables
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: microsoftextensions
- dependency-name: Microsoft.Extensions.Configuration.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: microsoftextensions
...

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

sample/Tracker/Tracker.Database/Tracker.Database.csproj

@@ -16,8 +16,8 @@
 
   <ItemGroup>
     <PackageReference Include="dbup-sqlserver" Version="6.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="8.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.0" />
   </ItemGroup>
 
   <ItemGroup>

test/EntityFrameworkCore.Generator.Core.Tests/EntityFrameworkCore.Generator.Core.Tests.csproj

@@ -25,8 +25,8 @@
     </PackageReference>
     <PackageReference Include="dbup-sqlserver" Version="6.0.0" />
     <PackageReference Include="FluentAssertions" Version="6.12.2" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="8.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">