Add support for Django ORM .raw method to SQL parameterization codemod

[drdavella]

Various ORMs (e.g. SQLAlchemy, Django) enable pass-thru execution of raw SQL queries. We need to consider these methods when finding and fixing potential SQL injection vulnerabilities. In the Django ORM specifically, this is enabled via the .raw method: https://docs.djangoproject.com/en/5.0/topics/db/sql/#performing-raw-sql-queries