Bump Azure.AI.OpenAI from 1.0.0-beta.17 to 2.1.0 in /DocGpt.Vsix

Bumps [Azure.AI.OpenAI](https://github.com/Azure/azure-sdk-for-net) from 1.0.0-beta.17 to 2.1.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-net/releases)
- [Commits](Azure/azure-sdk-for-net@Azure.AI.OpenAI_1.0.0-beta.17...Azure.AI.OpenAI_2.1.0)

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

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

DocGpt.Roslyn/DocGpt.Roslyn.csproj

@@ -19,7 +19,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Azure.AI.OpenAI" Version="1.0.0-beta.17" />
+		<PackageReference Include="Azure.AI.OpenAI" Version="2.1.0" />
 		<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.11.0" />
 	</ItemGroup>
 

DocGpt.Vsix/DocGpt.Vsix.csproj

@@ -92,7 +92,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Azure.AI.OpenAI">
-      <Version>1.0.0-beta.17</Version>
+      <Version>2.1.0</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.VisualStudio.Shell.15.0">
       <Version>17.11.40262</Version>