chore: bump majors on celery and Flask (#19168)

* chore: bump celery, Flask, flask-jwt-extended, pyJWT

* fix pyJWT breaking change

* fix pyJWT breaking change 2

* test

* fixed test

* fixed test

* fixed test

* revert since mypy won't pick the correct signature

* lint 1

* fix test

* fix test

* docs and celery config migration

* bump FAB to 4.0.0rc3, remove AUTH_STRICT_RESPONSE_CODES

* update docs for new celery config keys

* downgrade celery to 5.2.2

* ref FAB to final 4.0.0 release

* remove conflict left over

superset/cli/importexport.py

@@ -64,7 +64,9 @@ if feature_flags.get("VERSIONED_EXPORT"):
         from superset.dashboards.commands.export import ExportDashboardsCommand
         from superset.models.dashboard import Dashboard
 
-        g.user = security_manager.find_user(username="admin")
+        g.user = security_manager.find_user(  # pylint: disable=assigning-non-slot
+            username="admin"
+        )
 
         dashboard_ids = [id_ for (id_,) in db.session.query(Dashboard.id).all()]
         timestamp = datetime.now().strftime("%Y%m%dT%H%M%S")
@@ -96,7 +98,9 @@ if feature_flags.get("VERSIONED_EXPORT"):
         from superset.connectors.sqla.models import SqlaTable
         from superset.datasets.commands.export import ExportDatasetsCommand
 
-        g.user = security_manager.find_user(username="admin")
+        g.user = security_manager.find_user(  # pylint: disable=assigning-non-slot
+            username="admin"
+        )
 
         dataset_ids = [id_ for (id_,) in db.session.query(SqlaTable.id).all()]
         timestamp = datetime.now().strftime("%Y%m%dT%H%M%S")
@@ -135,7 +139,9 @@ if feature_flags.get("VERSIONED_EXPORT"):
         )
 
         if username is not None:
-            g.user = security_manager.find_user(username=username)
+            g.user = security_manager.find_user(  # pylint: disable=assigning-non-slot
+                username=username
+            )
         if is_zipfile(path):
             with ZipFile(path) as bundle:
                 contents = get_contents_from_bundle(bundle)
@@ -299,7 +305,9 @@ else:
         elif path_object.exists() and recursive:
             files.extend(path_object.rglob("*.json"))
         if username is not None:
-            g.user = security_manager.find_user(username=username)
+            g.user = security_manager.find_user(  # pylint: disable=assigning-non-slot
+                username=username
+            )
         contents = {}
         for path_ in files:
             with open(path_) as file: