Bump Aspire.Hosting.AppHost from 13.3.0 to 13.4.6

---
updated-dependencies:
- dependency-name: Aspire.Hosting.AppHost
  dependency-version: 13.4.6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

dotnet/Directory.Packages.props

@@ -7,7 +7,7 @@
   <ItemGroup>
     <PackageVersion Include="Aspire.Azure.AI.OpenAI" Version="9.3.1-preview.1.25305.6" />
     <PackageVersion Include="Aspire.Azure.Search.Documents" Version="13.3.0" />
-    <PackageVersion Include="Aspire.Hosting.AppHost" Version="13.3.0" />
+    <PackageVersion Include="Aspire.Hosting.AppHost" Version="13.4.6" />
     <PackageVersion Include="Aspire.Hosting.Azure.CognitiveServices" Version="13.3.0" />
     <PackageVersion Include="Aspire.Hosting.NodeJs" Version="9.5.2" />
     <PackageVersion Include="CommunityToolkit.Aspire.Hosting.Dapr" Version="9.9.0" />