OpenAPI schema missmatch between swagger and generator

[sambles]

Issue Description

Issue looks to be from here: encode/django-rest-framework#7427

OasisPlatform/src/server/oasisapi/analyses/v2_api/serializers.py

Line 86 in e3326c6

complex_model_data_files = serializers.PrimaryKeyRelatedField(many=True, read_only=True)

The swagger schema correctly sets this as type integer

    "AnalysisList": {
      "type": "object",
      "properties": {
         ...
        "complex_model_data_files": {                                                                                                                                                                                                                          
          "type": "array",
          "items": {
            "type": "integer"
          },  
            "readOnly": true,
            "uniqueItems": true 
          },  

But the command ./manage.py generate_swagger (from [drf_yasg]) sets this value as strings

    "AnalysisList": {
      "type": "object",
      "properties": {
         ...
        "complex_model_data_files": {                                                                                                                                                                                                                  
           "type": "array",
            "items": {
            "type": "string"
          },  
            "readOnly": true,
            "uniqueItems": true 
          },