Literal string types missing on Connection::{update,insert,delete}

Using the literalString setting, this package reports non literal string usages in methods like `Connection::executeQuery`. But these types are missing for the update, insert and delete methods. 

These methods all use string concatenation to create the resulting SQL. The `$table` parameter should be a literal string, as well as the
array keys of the `$data` and`$criteria`. 

