chore(deps): update dependency @google-cloud/bigquery to v7 - autoclosed

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@google-cloud/bigquery	^6.0.0 -> ^7.0.0

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Release Notes

googleapis/nodejs-bigquery (@​google-cloud/bigquery)

### [`v7.0.0`](https://togithub.com/googleapis/nodejs-bigquery/blob/HEAD/CHANGELOG.md#700-2023-07-31) [Compare Source](https://togithub.com/googleapis/nodejs-bigquery/compare/v6.2.1...v7.0.0) ##### ⚠ BREAKING CHANGES - migrate to node 14 ([#​1236](https://togithub.com/googleapis/nodejs-bigquery/issues/1236)) ##### Bug Fixes - **deps:** Update dependency google-auth-library to v9 ([#​1228](https://togithub.com/googleapis/nodejs-bigquery/issues/1228)) ([22cf786](https://togithub.com/googleapis/nodejs-bigquery/commit/22cf786579331e3cb7a3aa63dc2f71e448553e18)) ##### Miscellaneous Chores - Migrate to node 14 ([#​1236](https://togithub.com/googleapis/nodejs-bigquery/issues/1236)) ([73bf31f](https://togithub.com/googleapis/nodejs-bigquery/commit/73bf31f55c4fa9e384aa76e1a7af0603ebb0d11b))

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