Bump the dotnet group across 1 directory with 2 updates

Bumps the dotnet group with 2 updates in the /docs/ai/how-to/snippets/semantic-kernel directory: [Microsoft.SemanticKernel](https://github.com/microsoft/semantic-kernel) and [StackExchange.Redis](https://github.com/StackExchange/StackExchange.Redis).


Updates `Microsoft.SemanticKernel` from 1.17.2 to 1.20.0
- [Release notes](https://github.com/microsoft/semantic-kernel/releases)
- [Commits](microsoft/semantic-kernel@dotnet-1.17.2...dotnet-1.20.0)

Updates `StackExchange.Redis` from 2.8.0 to 2.8.16
- [Release notes](https://github.com/StackExchange/StackExchange.Redis/releases)
- [Changelog](https://github.com/StackExchange/StackExchange.Redis/blob/main/docs/ReleaseNotes.md)
- [Commits](StackExchange/StackExchange.Redis@2.8.0...2.8.16)

---
updated-dependencies:
- dependency-name: Microsoft.SemanticKernel
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: StackExchange.Redis
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docs/ai/how-to/snippets/semantic-kernel/semantic-kernel.csproj

@@ -15,11 +15,11 @@
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.0" />
-    <PackageReference Include="Microsoft.SemanticKernel" Version="1.17.2" />
+    <PackageReference Include="Microsoft.SemanticKernel" Version="1.20.0" />
     <PackageReference Include="Microsoft.SemanticKernel.Connectors.AzureAISearch" Version="1.9.0-alpha" />
     <PackageReference Include="Microsoft.SemanticKernel.Connectors.Redis" Version="1.9.0-alpha" />
     <PackageReference Include="Microsoft.SemanticKernel.Plugins.Memory" Version="1.9.0-alpha" />
-    <PackageReference Include="StackExchange.Redis" Version="2.8.0" />
+    <PackageReference Include="StackExchange.Redis" Version="2.8.16" />
   </ItemGroup>
 
 </Project>