fix: corrected bad datetime json encoding when selecting jsonl format

[neuromantik33]

This is a small patch to apply the correct serializer for jsonl as for json. It encountered it while evaluating this target:
The poetry.lock file was also incorrect. Cheers 🍺

2024-06-19T16:26:04.795208Z [info     ] TypeError: Object of type datetime is not JSON serializable cmd_type=elb consumer=True job_name=dev:tap-postgres-to-target-s3 name=target-s3 producer=False run_id=90af8632-26c9-450c-a2e3-69d587253194 stdio=stderr string_id=target-s3
2024-06-19T16:26:04.917234Z [error    ]                               
╭─────────────────────────────── Traceback (most recent call last) ────────────────────────────────╮
│ /home/drnick/repos/drnick/ingester-playground/.venv/lib/python3.10/site-packages/meltano/core/lo │
│ gging/output_logger.py:208 in redirect_logging                                                   │
│                                                                                                  │
│   205 │   │   │   *ignore_errors,                                                                │
│   206 │   │   )                                                                                  │
│   207 │   │   try:                                                                               │
│ ❱ 208 │   │   │   yield                                                                          │
│   209 │   │   except ignored_errors:  # noqa: WPS329                                             │
│   210 │   │   │   raise                                                                          │
│   211 │   │   except RunnerError as err:                                                         │
│                                                                                                  │