Bump Microsoft.Extensions.Configuration.EnvironmentVariables

Bumps [Microsoft.Extensions.Configuration.EnvironmentVariables](https://github.com/dotnet/runtime) 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)

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

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

Author: dependabot[bot]

CICD.Tools.GitHubToCatalogYamlTests/CICD.Tools.GitHubToCatalogYamlTests.csproj

@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="6.12.1" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="9.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="Moq" Version="4.20.72" />