fix: samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/Org.…

…OpenAPITools.csproj to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DOTNET-SWASHBUCKLEASPNETCORESWAGGERUI-6056391

samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.0.0"/>
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.10.8" />
     <PackageReference Include="Swashbuckle.AspNetCore.Newtonsoft" Version="5.0.0"/>
-    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="5.0.0"/>
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="6.3.0"/>
     <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="5.0.0" />
     <PackageReference Include="JsonSubTypes" Version="1.8.0" />
   </ItemGroup>