Replace from __future__ import annotations with the required future-import.

plugins/module_utils/identity/keycloak/_keycloak_utils.py

@@ -5,7 +5,8 @@
 # Note that this module util is **PRIVATE** to the collection. It can have breaking changes at any time.
 # Do not use this from other collections or standalone plugins/modules!
 
-from __future__ import annotations
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
 
 import typing as t
 

plugins/module_utils/identity/keycloak/keycloak.py

@@ -2,7 +2,8 @@
 # BSD 2-Clause license (see LICENSES/BSD-2-Clause.txt)
 # SPDX-License-Identifier: BSD-2-Clause
 
-from __future__ import annotations
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
 
 import copy
 import json

plugins/module_utils/identity/keycloak/keycloak_clientsecret.py

@@ -2,7 +2,8 @@
 # GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from __future__ import annotations
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
 
 import typing as t