chore(deps): update dependency microsoft.aspnetcore.openapi to v9

Author: renovate-bot

src/tests/WebApi.OpenAPI.SystemTest/WebApi.OpenAPI.SystemTest.csproj

@@ -9,7 +9,7 @@
     </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.12" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.1" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="7.2.0" />
     <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="7.2.0" />
     <PackageReference Include="Workleap.OpenApi.MSBuild" Version="0.11.0">