chore(deps): bump dbt-core in the pip group across 1 directory

Bumps the pip group with 1 update in the / directory: [dbt-core](https://github.com/dbt-labs/dbt-core).


Updates `dbt-core` from 1.7.5 to 1.7.15
- [Release notes](https://github.com/dbt-labs/dbt-core/releases)
- [Changelog](https://github.com/dbt-labs/dbt-core/blob/v1.7.15/CHANGELOG.md)
- [Commits](dbt-labs/dbt-core@v1.7.5...v1.7.15)

---
updated-dependencies:
- dependency-name: dbt-core
  dependency-type: indirect
  dependency-group: pip
...

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