Bump Microsoft.AspNetCore.OpenApi from 7.0.8 to 7.0.9

Bumps [Microsoft.AspNetCore.OpenApi](https://github.com/dotnet/aspnetcore) from 7.0.8 to 7.0.9.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](dotnet/aspnetcore@v7.0.8...v7.0.9)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.OpenApi
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/Directory.Packages.props

@@ -12,7 +12,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="7.0.8" />
+    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="7.0.9" />
     <PackageVersion Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.18.1" />
     <PackageVersion Include="OpenTelemetry.Exporter.Console" Version="1.5.1" />
     <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.5.1" />