Narhwals v1.21.1

Changes

✨ Enhancements

• feat: add Series|Expr.rank (#1342)

🐞 Bug fixes

• fix: fix license classifier (#1751)

📖 Documentation

• docs: update api-completeness with duckdb (#1740)

🛠️ Other improvements

• test: remove cudf from tests/expr_and_series/replace_time_zone_test.py::test_replace_time_zone_none[cudf] (#1748)
• chore: filter old pyarrow/pandas warnings we cant do anything about (#1746)
• [pre-commit.ci] pre-commit autoupdate (#1741)

Thank you to all our contributors for making this release possible!
@AlessandroMiola, @Dhanunjaya-Elluri, @EdAbati, @FBruzzesi, @MarcoGorelli, @anopsy