Bump google-cloud-bigquery from 3.23.1 to 3.26.0 in /docs

Bumps [google-cloud-bigquery](https://github.com/googleapis/python-bigquery) from 3.23.1 to 3.26.0.
- [Release notes](https://github.com/googleapis/python-bigquery/releases)
- [Changelog](https://github.com/googleapis/python-bigquery/blob/main/CHANGELOG.md)
- [Commits](googleapis/python-bigquery@v3.23.1...v3.26.0)

---
updated-dependencies:
- dependency-name: google-cloud-bigquery
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -14,7 +14,7 @@ facebook-business==13.0.0
 google-api-core==2.19.2
 google-api-python-client==1.7.7
 google-auth==2.29.0
-google-cloud-bigquery==3.23.1
+google-cloud-bigquery==3.26.0
 google-cloud-storage-transfer==1.9.1
 google-cloud-storage==2.16.0
 google-resumable-media==2.7.0