Bump the dotnet group

Bumps the dotnet group in /docs/core/whats-new/snippets/dotnet-9/csharp with 2 updates: [System.Net.ServerSentEvents](https://github.com/dotnet/runtime) and [System.Numerics.Tensors](https://github.com/dotnet/runtime).


Updates `System.Net.ServerSentEvents` from 9.0.0 to 9.0.1
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v9.0.0...v9.0.1)

Updates `System.Numerics.Tensors` from 9.0.0 to 9.0.1
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v9.0.0...v9.0.1)

---
updated-dependencies:
- dependency-name: System.Net.ServerSentEvents
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: System.Numerics.Tensors
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
...

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

Author: dependabot[bot]

docs/core/whats-new/snippets/dotnet-9/csharp/Project.csproj

@@ -11,8 +11,8 @@
     <PackageReference Include="Azure.Storage.Blobs" Version="12.23.0" />
     <PackageReference Include="Microsoft.ML.Tokenizers" Version="1.0.0" />
     <PackageReference Include="System.Memory" Version="4.6.0" />
-    <PackageReference Include="System.Net.ServerSentEvents" Version="9.0.0" />
-    <PackageReference Include="System.Numerics.Tensors" Version="9.0.0" />
+    <PackageReference Include="System.Net.ServerSentEvents" Version="9.0.1" />
+    <PackageReference Include="System.Numerics.Tensors" Version="9.0.1" />
   </ItemGroup>
 
   <ItemGroup>