Bump the python-packages group with 4 updates

Bumps the python-packages group with 4 updates: [db-dtypes](https://github.com/googleapis/python-db-dtypes-pandas), [google-cloud-bigquery](https://github.com/googleapis/python-bigquery), [sqlglot](https://github.com/tobymao/sqlglot) and [ruff](https://github.com/astral-sh/ruff).


Updates `db-dtypes` from 1.3.1 to 1.4.0
- [Release notes](https://github.com/googleapis/python-db-dtypes-pandas/releases)
- [Changelog](https://github.com/googleapis/python-db-dtypes-pandas/blob/main/CHANGELOG.md)
- [Commits](googleapis/python-db-dtypes-pandas@v1.3.1...v1.4.0)

Updates `google-cloud-bigquery` from 3.27.0 to 3.29.0
- [Release notes](https://github.com/googleapis/python-bigquery/releases)
- [Changelog](https://github.com/googleapis/python-bigquery/blob/main/CHANGELOG.md)
- [Commits](googleapis/python-bigquery@v3.27.0...v3.29.0)

Updates `sqlglot` from 26.2.1 to 26.3.9
- [Changelog](https://github.com/tobymao/sqlglot/blob/main/CHANGELOG.md)
- [Commits](tobymao/sqlglot@v26.2.1...v26.3.9)

Updates `ruff` from 0.9.2 to 0.9.3
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.9.2...0.9.3)

---
updated-dependencies:
- dependency-name: db-dtypes
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: google-cloud-bigquery
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: sqlglot
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: ruff
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python-packages
...

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