test: fixes for test after eth 5 to 6 migration #386

Job	Run time
API test set: stub.test.ts / Node: lts/*	10m 49s
API test set: accounts.test.ts / Node: lts/*	12m 3s
API test set: addresses.test.ts / Node: lts/*	12m 20s
API test set: batches.test.ts / Node: lts/*	11m 5s
API test set: blocks.test.ts / Node: lts/*	11m 27s
API test set: contracts.test.ts / Node: lts/*	11m 38s
API test set: logs.test.ts / Node: lts/*	11m 6s
API test set: stats.test.ts / Node: lts/*	10m 53s
API test set: tokens.test.ts / Node: lts/*	11m 28s
API test set: transactions.test.ts / Node: lts/*	14m 33s
	1h 57m 22s

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