Incorrect Prisma compliance stats

[paskal]

As discovered by @kostty, current compliance stats don't look right compared to dashboard you can see in Prisma. This is the output of /compliance/dashboard API endpoint we are parsing:

 {
        "default": true,
        "description": "Center for Internet Security Benchmark for Google Cloud Platform Foundation v1.0.0",
        "id": "id",
        "name": "CIS v1.0.0 (GCP)",
        "policiesAssignedCount": 42,
        "resourcesFailed": 1,
        "resourcesPassed": 10
    }

As he discovered, /compliance/posture have the data we had in mind for collection when writing this collector:

      {
            "assignedPolicies": 42,
            "description": "Center for Internet Security Benchmark for Google Cloud Platform Foundation v1.0.0",
            "failedResources": 3,
            "highSeverityFailedResources": 1,
            "id": "id",
            "lowSeverityFailedResources": 0,
            "mediumSeverityFailedResources": 2,
            "name": "CIS v1.0.0 (GCP)",
            "passedResources": 12,
            "totalResources": 15
        }

The code should be changed to look at /compliance/posture endpoint.