ngVersion being ignored when trying to generate both a ng13 and ng15 typescript-angular SDK

When trying to generate a typescript-angular project for angular 13 it always produces one for angular 15. I need to be able to support both version of angular

Here is the npm script I am running:
"generate": "cross-env openapi-generator-cli generate -i openApi.json -g typescript-angular -o openapi.ng13 -p --additional-properties=ngVersion=13.0.0

No matter what I put in for the ngVersion is always generates one for Angular 15.

OpenApi.Json:
{
"$schema": "node_modules/@openapitools/openapi-generator-cli/config.schema.json",
"spaces": 2,
"generator-cli": {
"version": "6.5.0"
}
}

"@openapitools/openapi-generator-cli": "^2.5.2"

Reproduce the npm generate script using openApi.json and the generator-cli configuration shown in the issue, comparing output from ngVersion=13.0.0 with the default Angular 15 output. Trace the typescript-angular generator's handling of the ngVersion additional property; done means the same specification can generate distinct Angular 13 and Angular 15 SDKs as requested.