test: fixes for test after eth 5 to 6 migration #403

Job	Run time
API test set: stub.test.ts / Node: lts/*	11m 38s
API test set: accounts.test.ts / Node: lts/*	12m 25s
API test set: addresses.test.ts / Node: lts/*	13m 53s
API test set: batches.test.ts / Node: lts/*	11m 52s
API test set: blocks.test.ts / Node: lts/*	12m 1s
API test set: contracts.test.ts / Node: lts/*	11m 47s
API test set: logs.test.ts / Node: lts/*	11m 39s
API test set: stats.test.ts / Node: lts/*	11m 21s
API test set: tokens.test.ts / Node: lts/*	11m 26s
API test set: transactions.test.ts / Node: lts/*	20m 51s
	2h 8m 53s

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