Bump the dotnet group with 1 update

Bumps Microsoft.Extensions.AI.OpenAI from 10.4.1 to 10.6.0

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.AI.OpenAI
  dependency-version: 10.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

docs/ai/vector-stores/snippets/how-to/HowToSnippets.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Azure.AI.OpenAI" Version="2.*" />
     <PackageReference Include="DocumentFormat.OpenXml" Version="3.*" />
     <PackageReference Include="Microsoft.Extensions.AI" Version="10.*" />
-    <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="10.4.1" />
+    <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="10.6.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.*" />
     <PackageReference Include="Microsoft.SemanticKernel.Connectors.InMemory" Version="1.*-*" />
     <PackageReference Include="Microsoft.SemanticKernel.Connectors.Redis" Version="1.*-*" />