databases/diesel-cli: update to 2.1.4

v2.1.4
- Update libsqlite3-sys to allow version 0.27 as well

v2.1.3
- Increased accidentally decreased limit around element count in DISTINCT ON
  and ORDER BY clauses again as that broke existing code

v2.1.2
- Fixed another potential breaking chaneg around queries containing DISTINCT
  ON and ORDER BY clauses consisting of custom sql expressions
  (e.g. .nullable())
- Fixed an issue where #[derive(Selectable)] and #[diesel(check_for_backend)]
  generates invalid rust code if the struct contains lifetimes/generic types

(pin)