Bump the dotnet group with 2 updates

Bumps Azure.Identity from 1.14.2 to 1.16.0
Bumps OpenAI from 2.3.0 to 2.4.0

---
updated-dependencies:
- dependency-name: Azure.Identity
  dependency-version: 1.16.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: OpenAI
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

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

Author: dependabot[bot]

docs/ai/quickstarts/snippets/assistants/AIAssistants.csproj

@@ -9,8 +9,8 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.AI.OpenAI" Version="2.1.0" />
-    <PackageReference Include="Azure.Identity" Version="1.14.2" />
-    <PackageReference Include="OpenAI" Version="2.3.0" />
+    <PackageReference Include="Azure.Identity" Version="1.16.0" />
+    <PackageReference Include="OpenAI" Version="2.4.0" />
   </ItemGroup>
 
 </Project>