Bump GitHub.Copilot.SDK from 0.1.26 to 0.1.29

---
updated-dependencies:
- dependency-name: GitHub.Copilot.SDK
  dependency-version: 0.1.29
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/CopilotSdkPlayground.UnitTests/CopilotSdkPlayground.UnitTests.csproj

@@ -13,7 +13,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="GitHub.Copilot.SDK" Version="0.1.26" />
+    <PackageReference Include="GitHub.Copilot.SDK" Version="0.1.29" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.3" />

src/CopilotSdkPlayground/CopilotSdkPlayground.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="GitHub.Copilot.SDK" Version="0.1.26" />
+    <PackageReference Include="GitHub.Copilot.SDK" Version="0.1.29" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.3" />
   </ItemGroup>