feat: [AiPlatform] add enable_zero_data_retention to Tool.ParallelAiSearch (#9567)

* feat: add enable_zero_data_retention to Tool.ParallelAiSearch

PiperOrigin-RevId: 970039598

Source-Link: googleapis/googleapis@ff81d8a

Source-Link: googleapis/googleapis-gen@27380d6
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Co-authored-by: Owl Bot 

Author: gcf-owl-bot[bot]