Bump sqlglot from 30.14.0 to 30.15.0

Bumps [sqlglot](https://github.com/tobymao/sqlglot) from 30.14.0 to 30.15.0.
- [Commits](tobymao/sqlglot@v30.14.0...v30.15.0)

---
updated-dependencies:
- dependency-name: sqlglot
  dependency-version: 30.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]