feat: add API for GPU driver installation config

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feat: add SecurityPostureConfig API field to allow customers to enable GKE Security Posture capabilities for their clusters

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feat: add workloadPolicyConfig API field to allow customer enable NET_ADMIN capability for their autopilot clusters
PiperOrigin-RevId: 538770734

Source-Link: googleapis/googleapis@b7e9312

Source-Link: googleapis/googleapis-gen@0988e7e
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