Get all global variables

Example response

{
  "variables": [
    {
      "attributes": {
        "restricted_roles": [
          "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
        ]
      },
      "description": "Example description",
      "name": "MY_VARIABLE",
      "parse_test_options": {
        "field": "content-type",
        "localVariableName": "LOCAL_VARIABLE",
        "parser": {
          "type": "regex",
          "value": ".*"
        },
        "type": "http_body"
      },
      "parse_test_public_id": "abc-def-123",
      "tags": [
        "team:front",
        "test:workflow-1"
      ],
      "value": {
        "secure": true,
        "value": "value"
      }
    }
  ]
}