Use DictCursor for psycopg2 tests for fairness
Use DictCursor for psycopg2 tests for fairness

Other drivers return rows as name-addressable records, not tuples, make
psycopg2 do the same for a more fair comparison.

MagicStack/pgbench,MagicStack/pgbench,MagicStack/pgbench,MagicStack/pgbench,MagicStack/pgbench