Avoid invalid json in linked task signature

Author: koopmant

app/grandchallenge/algorithms/models.py

@@ -1263,7 +1263,7 @@ def validate_civ_data_objects_and_execute_linked_task(
         )
 
         linked_task = execute_algorithm_job_for_inputs.signature(
-            kwargs={"job_pk": self.pk}, immutable=True
+            kwargs={"job_pk": str(self.pk)}, immutable=True
         )
 
         return super().validate_civ_data_objects_and_execute_linked_task(

app/grandchallenge/components/models.py

@@ -2654,9 +2654,9 @@ def _update_civ_for_image(  # noqa: C901
                 kwargs={
                     "app_label": self._meta.app_label,
                     "model_name": self._meta.model_name,
-                    "object_pk": self.pk,
+                    "object_pk": str(self.pk),
                     "interface_pk": str(ci.pk),
-                    "dicom_image_set_upload_pk": upload.pk,
+                    "dicom_image_set_upload_pk": str(upload.pk),
                     "linked_task": linked_task,
                 },
                 immutable=True,

app/grandchallenge/evaluation/models.py

@@ -2118,7 +2118,7 @@ def validate_civ_data_objects_and_execute_linked_task(
 
         linked_task = check_prerequisites_for_evaluation_execution.signature(
             kwargs={
-                "evaluation_pk": self.pk,
+                "evaluation_pk": str(self.pk),
             },
             immutable=True,
         )