build(deps): bump Microsoft.AspNetCore.OpenApi from 8.0.2 to 8.0.3

Bumps [Microsoft.AspNetCore.OpenApi](https://github.com/dotnet/aspnetcore) from 8.0.2 to 8.0.3.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](https://github.com/dotnet/aspnetcore/compare/v8.0.2...v8.0.3)

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

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

LLama.WebAPI/LLama.WebAPI.csproj

@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.VisualStudio.Validation" Version="17.8.8" />
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.2" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.3" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
   </ItemGroup>