refactor: Unify all json.(loads|dumps) usage to utils.json (#28702)

Co-authored-by: Eyal Ezer <eyal.ezer@ge.com>

tests/integration_tests/security/api_tests.py

@@ -17,8 +17,6 @@
 # isort:skip_file
 """Tests for security api methods"""
 
-import json
-
 import jwt
 import pytest
 
@@ -27,6 +25,7 @@ from superset import db
 from superset.daos.dashboard import EmbeddedDashboardDAO
 from superset.models.dashboard import Dashboard
 from superset.utils.urls import get_url_host
+from superset.utils import json
 from tests.integration_tests.base_tests import SupersetTestCase
 from tests.integration_tests.constants import ADMIN_USERNAME, GAMMA_USERNAME
 from tests.integration_tests.fixtures.birth_names_dashboard import (

tests/integration_tests/security/guest_token_security_tests.py

@@ -16,7 +16,6 @@
 # under the License.
 """Unit tests for Superset"""
 
-import json
 from unittest.mock import Mock, patch
 
 import pytest
@@ -29,6 +28,7 @@ from superset.exceptions import SupersetSecurityException
 from superset.models.dashboard import Dashboard
 from superset.security.guest_token import GuestTokenResourceType  # noqa: F401
 from superset.sql_parse import Table  # noqa: F401
+from superset.utils import json
 from superset.utils.core import get_example_default_schema
 from superset.utils.database import get_example_database
 from tests.integration_tests.base_tests import SupersetTestCase

tests/integration_tests/security/row_level_security_tests.py

@@ -21,7 +21,6 @@ from unittest import mock
 
 import pytest
 from flask import g
-import json
 import prison
 
 from superset import db, security_manager, app  # noqa: F401
@@ -30,6 +29,7 @@ from superset.security.guest_token import (
     GuestTokenResourceType,
     GuestUser,
 )
+from superset.utils import json
 from flask_babel import lazy_gettext as _  # noqa: F401
 from flask_appbuilder.models.sqla import filters
 from tests.integration_tests.base_tests import SupersetTestCase