Fixing issues regarding psycopg2 vs psycopg3 benchmark

[semabtariq1]

• Updating dependencies versions
• A hack to overcome out of index error while running psycopg3 batch inserts benchmark
• Adding conn.commit() so that we can commit data into PostgreSQL
• Adding python-psycopg2 and python-psycopg3 keywords so that they can be run from pgbench utility as well