test: automation tests for Transactions + Withdrawal API #188

Job	Run time
API test set: accounts.test.ts / Node: lts/*	12m 47s
API test set: addresses.test.ts / Node: lts/*	13m 4s
API test set: batches.test.ts / Node: lts/*	12m 54s
API test set: blocks.test.ts / Node: lts/*	12m 29s
API test set: contracts.test.ts / Node: lts/*	12m 30s
API test set: logs.test.ts / Node: lts/*	12m 43s
API test set: stats.test.ts / Node: lts/*	11m 56s
API test set: tokens.test.ts / Node: lts/*	12m 40s
API test set: transactions.test.ts / Node: lts/*	14m 40s
	1h 55m 43s

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