{
  "buildpacks": [
     {"url": "heroku/python"},
     {"url": "https://github.com/SalesforceFoundation/simple-salesforce-dx-buildpack.git"}
  ],
  "environments": {
    "test": {
      "buildpacks": [
        {"url": "heroku/python"},
        {"url": "https://github.com/SalesforceFoundation/simple-salesforce-dx-buildpack.git"}
      ],
      "scripts": {
        "test-setup": "pip install --upgrade -r requirements_dev.txt",
        "test": "./heroku_ci.sh"
      }
    }
  }
}

{
  "environments": {
    "test": {
      "buildpacks": [
        {"url": "heroku/python"},
        {"url": "https://github.com/SalesforceFoundation/simple-salesforce-dx-buildpack.git"}
      ],
      "formation": {
        "test": {
          "quantity": 1,
          "size": "standard-1x"
        }
      },
      "scripts": {
        "test-setup": "pip install --upgrade -r requirements_dev.txt",
        "test": "./heroku_ci.sh"
      }
    }
  }
}

Remove buildpacks from top level and add formation to use standard-1x dynos instead of the performance-m default
Remove buildpacks from top level and add formation to use standard-1x
dynos instead of the performance-m default
