Deploy test API when deploying production API

```bash
docker pull docker.pkg.github.com/anime-skip/public-api/server:prod
docker tag docker.pkg.github.com/anime-skip/public-api/server:prod registry.heroku.com/prod-public-api-test/web
docker push registry.heroku.com/prod-public-api-test/web
heroku container:release -a prod-public-api-test web
```