QueryBuilder should use get_connection() not new_connection() internally

[circulon]

Describe the bug
Like #958 the QueryBuilder class creates a new connection object for many calls to the backend.
Ideally the new_connection() method should only return (not store) the connection object and the get_connection() method should be used to manage the internal _commection instance var.

To Reproduce
see this code:

    def new_connection(self):
        if self._connection:
            return self._connection

        self._connection = (
            self.connection_class(
                **self.get_connection_information(), name=self.connection
            )
            .set_schema(self._schema)
            .make_connection()
        )
        return self._connection

    def get_connection(self):
        return self._connection

Expected behavior
get_connection() should be used internally (possibly elsewhere as well)
so connections are not made to the backend unneccarily.

Screenshots or code snippets
N/A

Desktop (please complete the following information):

• OS: MacOS
• Version 12.7 Monterey

What database are you using?

• Type: Postgres, MySQL, SQLite
• Version any
• Masonite ORM: latest 2.0 and latest 3.0 (latest 3.x branch)

Additional context
None