CI Failure (can't reach v1/security/roles/d/members) in RolePersistenceTest.test_role_survives_restart

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https://buildkite.com/redpanda/redpanda/builds/50143

Module: rptest.tests.rbac_test
Class: RolePersistenceTest
Method: test_role_survives_restart

test_id:    RolePersistenceTest.test_role_survives_restart
status:     FAIL
run time:   25.892 seconds

HTTPError('504 Server Error: Gateway Timeout for url: http://docker-rp-23:9644/v1/security/roles/d/members?redirect=1')
Traceback (most recent call last):
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 184, in _do_run
    data = self.run_test()
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 276, in run_test
    return self.test_context.function(self.test)
  File "/root/tests/rptest/services/cluster.py", line 105, in wrapped
    r = f(self, *args, **kwargs)
  File "/root/tests/rptest/tests/rbac_test.py", line 914, in test_role_survives_restart
    admin.update_role_members(role=rand_role, add=[RoleMember.User(u)])
  File "/root/tests/rptest/services/admin.py", line 1102, in update_role_members
    return self._request("post",
  File "/root/tests/rptest/services/admin.py", line 591, in _request
    r.raise_for_status()
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/requests/models.py", line 941, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 504 Server Error: Gateway Timeout for url: http://docker-rp-23:9644/v1/security/roles/d/members?redirect=1

JIRA Link: CORE-4253