chore(deps): bump Azure.AI.OpenAI from 1.0.0-beta.5 to 1.0.0-beta.6

Bumps [Azure.AI.OpenAI](https://github.com/Azure/azure-sdk-for-net) from 1.0.0-beta.5 to 1.0.0-beta.6.
- [Release notes](https://github.com/Azure/azure-sdk-for-net/releases)
- [Commits](Azure/azure-sdk-for-net@Azure.AI.OpenAI_1.0.0-beta.5...Azure.AI.OpenAI_1.0.0-beta.6)

---
updated-dependencies:
- dependency-name: Azure.AI.OpenAI
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

example/Example.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -14,7 +14,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Azure.AI.OpenAI" Version="1.0.0-beta.5" />
+    <PackageReference Include="Azure.AI.OpenAI" Version="1.0.0-beta.6" />
   </ItemGroup>
 
 </Project>