Bump Microsoft.Extensions.TimeProvider.Testing from 9.2.0 to 9.4.0

Bumps [Microsoft.Extensions.TimeProvider.Testing](https://github.com/dotnet/extensions) from 9.2.0 to 9.4.0.
- [Release notes](https://github.com/dotnet/extensions/releases)
- [Commits](dotnet/extensions@v9.2.0...v9.4.0)

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.TimeProvider.Testing
  dependency-version: 9.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

AsyncMemoryCache.Tests/AsyncMemoryCache.Tests.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
 		<TargetFramework>net9.0</TargetFramework>
@@ -29,7 +29,7 @@
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
 		<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.2" />
-		<PackageReference Include="Microsoft.Extensions.TimeProvider.Testing" Version="9.2.0" />
+		<PackageReference Include="Microsoft.Extensions.TimeProvider.Testing" Version="9.4.0" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
 		<PackageReference Include="NSubstitute" Version="5.3.0" />
 		<PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.17">