Bump duckdb-engine from 0.11.5 to 0.12.0 in /spark (#150)

Bumps [duckdb-engine](https://github.com/Mause/duckdb_engine) from 0.11.5 to 0.12.0.
- [Release notes](https://github.com/Mause/duckdb_engine/releases)
- [Changelog](https://github.com/Mause/duckdb_engine/blob/main/CHANGELOG.md)
- [Commits](Mause/duckdb_engine@v0.11.5...v0.12.0)

---
updated-dependencies:
- dependency-name: duckdb-engine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

spark/requirements.txt

@@ -4,4 +4,4 @@ pyiceberg[pyarrow,duckdb,pandas]==0.6.1
 jupysql==0.10.5
 matplotlib==3.8.4
 scipy==1.13.0
-duckdb-engine==0.11.5
+duckdb-engine==0.12.0