Bump Microsoft.Extensions.TimeProvider.Testing in /src

Bumps [Microsoft.Extensions.TimeProvider.Testing](https://github.com/dotnet/extensions) from 8.10.0 to 9.0.0.
- [Release notes](https://github.com/dotnet/extensions/releases)
- [Commits](dotnet/extensions@v8.10.0...v9.0.0)

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

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -23,7 +23,7 @@
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
     <PackageVersion Include="Microsoft.Extensions.Hosting.Abstractions" Version="8.0.1" />
     <PackageVersion Include="Microsoft.Extensions.Hosting.WindowsServices" Version="8.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="8.10.0" />
+    <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="9.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageVersion Include="Microsoft-WindowsAPICodePack-Shell" Version="1.1.5" />
     <PackageVersion Include="Mindscape.Raygun4Net.NetCore" Version="11.1.2" />