fix: Change validation condition for check_logs_are_enabled rule

[ninedongsu]

Issue #, if available:

Description of changes:
This PR is for fixing validation logic for security/check_logs_are_enabled rule.
The Validation condition in the rule always return True even if the audit log was disabled.

>>> cluster_metadata["cluster"]["logging"]["clusterLogging"]
[{'types': ['api', 'authenticator', 'controllerManager', 'scheduler'], 'enabled': True}, {'types': ['audit'], 'enabled': False}]
>>> cluster_metadata["cluster"]["logging"]["clusterLogging"][0]["enabled"]
True

Now changed validation logic correctly.

>>> cluster_metadata["cluster"]["logging"]["clusterLogging"]
[{'types': ['api', 'authenticator', 'controllerManager', 'scheduler'], 'enabled': True}, {'types': ['audit'], 'enabled': False}]
>>> logs = filter(lambda x: x.get('enabled') and 'audit' in x.get('types'), cluster_metadata["cluster"]["logging"]["clusterLogging"])                                                                                                                                                                                     
>>> list(logs)
[]

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