Bump the dotnet group with 2 updates (#48509)

Bumps Azure.Identity from 1.14.2 to 1.16.0
Bumps Microsoft.Extensions.AI from 9.7.1 to 9.9.0

---
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: Microsoft.Extensions.AI
  dependency-version: 9.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/ai/how-to/snippets/content-filtering/AIContentFiltering.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="Microsoft.Extensions.AI" Version="9.7.1" />
+    <PackageReference Include="Azure.Identity" Version="1.16.0" />
+    <PackageReference Include="Microsoft.Extensions.AI" Version="9.9.0" />
     <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.4.0-preview.1.25207.5" />
   </ItemGroup>