Log Message:
databases/diesel-cli: update to 2.1.1

Fixed
 - Fixed an issue in diesel-cli that lead to using unquoted table names in one
   of the internal queries
 - Fixed a bug in diesel print-schema that lead to generating invalid table!
   macros if both the #[sql_name] and the #[max_lenght] attribute are present
 - Fixed an issue in diesel-cli that lead to ignoring certain foreign key
   constraints for postgresql
 - Fixed an crash while using diesel print-schema with really old sqlite
   versions
 - Fixed an issue where #[diesel(check_for_backend)] ignored
   #[diesel(deserialize_as)] attributes
 - Fixed several issues with the new #[derive(MultiConnection)] feature
 - Fixed some edge cases in our sqlite timestamp parsing behaviour
 - diesel migration generate --diff-schema now respects table filters as setup
   for print-schema via diesel.toml
 - Fixed a potential breaking change around queries containing DISTINCT ON and
   ORDER BY clauses consisting of custom sql expressions
   (e.g. diesel::dsl::sql)

Added
 - Support for bigdecimal 0.4