Bump GitHub.Copilot.SDK from 1.0.8 to 1.0.9

---
updated-dependencies:
- dependency-name: GitHub.Copilot.SDK
  dependency-version: 1.0.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -86,7 +86,7 @@
          workaround until Microsoft.Agents.AI.GitHub.Copilot ships the
          buildTransitive bridge from microsoft/agent-framework#6457, so keep the
          direct ref pinned until that preview lands. -->
-    <PackageVersion Include="GitHub.Copilot.SDK" Version="1.0.8" />
+    <PackageVersion Include="GitHub.Copilot.SDK" Version="1.0.9" />
     <PackageVersion Include="JsonSchema.Net" Version="9.4.0" />
     <PackageVersion Include="KubernetesClient" Version="19.0.2" />
     <PackageVersion Include="OllamaSharp" Version="5.4.12" />