chore(deps): bump @tootallnate/once and @google-cloud/bigquery

Removes [@tootallnate/once](https://github.com/TooTallNate/once). It's no longer used after updating ancestor dependency [@google-cloud/bigquery](https://github.com/googleapis/nodejs-bigquery). These dependencies need to be updated together.


Removes `@tootallnate/once`

Updates `@google-cloud/bigquery` from 6.0.3 to 8.1.1
- [Release notes](https://github.com/googleapis/nodejs-bigquery/releases)
- [Changelog](https://github.com/googleapis/nodejs-bigquery/blob/main/CHANGELOG.md)
- [Commits](googleapis/nodejs-bigquery@v6.0.3...v8.1.1)

---
updated-dependencies:
- dependency-name: "@tootallnate/once"
  dependency-version: 
  dependency-type: indirect
- dependency-name: "@google-cloud/bigquery"
  dependency-version: 8.1.1
  dependency-type: direct:production
...

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Author: dependabot[bot]