fix: PostgreSQL dollar-tag detection inside quoted strings

[Kovania]

Problem

The querySplitter function incorrectly parsed $ characters inside single-quoted strings as PostgreSQL dollar-quoted tag delimiters. This caused queries with bcrypt hashes (e.g., '$2b$12$...') or any string containing $ to fail with syntax errors.

Solution

Modified the dollar-tag detection logic to only trigger when outside regular quoted strings ('...'). Dollar-tags are now correctly ignored when inside string literals, while still properly handling legitimate PostgreSQL dollar-quoted blocks like $function$...$function$.

Example of fixed query

UPDATE player SET password = '$2b$12$p74VOtx8skceVEFSvRdo7eGcQU5L/c9yHb3jRJ05XesMEw53/wdiC';