update_token_insight.py script failure

We seem to be hitting what I think are etherscan rate limiting when the update_token_insight.py script runs.

Seen in the logs:

2023-04-27T19:05:54.791682+00:00 app[scheduler.1237]: Error while fetching balance
2023-04-27T19:05:54.791698+00:00 app[scheduler.1237]: {'status': '0', 'message': 'NOTOK', 'result': 'Max rate limit reached'}
2023-04-27T19:05:54.840276+00:00 app[scheduler.1237]: Traceback (most recent call last):
2023-04-27T19:05:54.842113+00:00 app[scheduler.1237]: File "/app/logic/scripts/update_token_insight.py", line 483, in <module>
2023-04-27T19:05:54.842267+00:00 app[scheduler.1237]: fetch_reserved_wallet_balances()
2023-04-27T19:05:54.842271+00:00 app[scheduler.1237]: File "/app/logic/scripts/update_token_insight.py", line 453, in fetch_reserved_wallet_balances
2023-04-27T19:05:54.842340+00:00 app[scheduler.1237]: fetch_wallet_balance(token_stats.new_foundation_reserve_address)
2023-04-27T19:05:54.842342+00:00 app[scheduler.1237]: File "/app/logic/scripts/update_token_insight.py", line 389, in fetch_wallet_balance
2023-04-27T19:05:54.842406+00:00 app[scheduler.1237]: ogn_balance = fetch_wallet_token_balance(wallet, token_stats.ogn_contract)
2023-04-27T19:05:54.842407+00:00 app[scheduler.1237]: File "/app/logic/scripts/update_token_insight.py", line 359, in fetch_wallet_token_balance
2023-04-27T19:05:54.842467+00:00 app[scheduler.1237]: raise ValueError(resp["message"] or ("Failed to fetch %s balance" % token_addr))
2023-04-27T19:05:54.842478+00:00 app[scheduler.1237]: ValueError: NOTOK

Relevant code:
https://github.com/OriginProtocol/origin-website/blob/803fe4dc0e86b2f8be33e29e566442c7746cf556/logic/scripts/update_token_insight.py#L349

Read logic/scripts/update_token_insight.py around fetch_wallet_token_balance at line 349 and trace the calls shown in the traceback. Reproduce or inspect the scheduler failure, then define and verify the expected behavior when Etherscan returns “Max rate limit reached”; the issue does not specify the intended handling.