chore(release): 1.6.0 [skip ci]

# [1.6.0](https://gitlab.com/to-be-continuous/sqlfluff/compare/1.5.0...1.6.0) (2025-08-12)

### Features

* modular workflow rules ([57ed1de2](https://gitlab.com/to-be-continuous/sqlfluff/commit/57ed1de24c308baa188c704aa981c8bee246b6ee))