Bump Microsoft.SemanticKernel

Bumps the dotnet group in /docs/ai/how-to/snippets/semantic-kernel with 1 update: [Microsoft.SemanticKernel](https://github.com/microsoft/semantic-kernel).


Updates `Microsoft.SemanticKernel` from 1.14.1 to 1.15.0
- [Release notes](https://github.com/microsoft/semantic-kernel/releases)
- [Commits](microsoft/semantic-kernel@dotnet-1.14.1...dotnet-1.15.0)

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

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

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

@@ -15,7 +15,7 @@
     <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="1.14.1" />
+    <PackageReference Include="Microsoft.SemanticKernel" Version="1.15.0" />
     <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" />