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I want defaultPartitionExpirationMs in dataset metadata

It exists on the API but is not in the go struct.
https://cloud.google.com/bigquery/docs/reference/rest/v2/datasets?hl=en#Dataset

DatasetMetadataToUpdate also needs to be modified in order to update.

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Add defaultPartitionExpirationMs to struct

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Use https://github.com/googleapis/google-api-go-client/tree/main/bigquery/v2

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