Bump the dotnet group

Bumps the dotnet group in /docs/ai/quickstarts/snippets/image-generation/azure-openai with 3 updates: [Azure.AI.OpenAI](https://github.com/Azure/azure-sdk-for-net), [Microsoft.Extensions.Configuration](https://github.com/dotnet/runtime) and [Microsoft.Extensions.Configuration.UserSecrets](https://github.com/dotnet/runtime).


Updates `Azure.AI.OpenAI` from 2.1.0-beta.1 to 2.1.0
- [Release notes](https://github.com/Azure/azure-sdk-for-net/releases)
- [Commits](Azure/azure-sdk-for-net@Azure.AI.OpenAI_2.1.0-beta.1...Azure.AI.OpenAI_2.1.0)

Updates `Microsoft.Extensions.Configuration` 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` 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.UserSecrets` 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: Azure.AI.OpenAI
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.Configuration
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.Configuration
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.Configuration.UserSecrets
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dotnet
...

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

Author: dependabot[bot]

docs/ai/quickstarts/snippets/image-generation/azure-openai/ImagesAzureOpenAI.csproj

@@ -9,9 +9,9 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.Identity" Version="1.13.1" />
-    <PackageReference Include="Azure.AI.OpenAI" Version="2.1.0-beta.1" />
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.0" />
+    <PackageReference Include="Azure.AI.OpenAI" Version="2.1.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="9.0.0" />
 
   </ItemGroup>