fix webserver healthcheck issue #697

Job	Run time
Clippy	3m 18s
Format	1m 0s
Tests	4m 32s
Docker (chain, chain)	9m 40s
Docker (governance, governance)	9m 35s
Validate Swagger	26s
Docker (pos, pos)	9m 28s
Docker (rewards, rewards)	9m 36s
Docker (seeder, seeder)	9m 41s
Docker (webserver, webserver)	9m 44s
Docker (parameters, parameters)	9m 31s
Docker (transactions, transactions)	9m 51s
can_enqueue	1s
can_merge	0s
	1h 26m 23s

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