Bump PoV request timeout #10343

Job	Run time
preflight / preflight	34s
preflight / ci-versions	1m 8s
test-linux-stable (1/3, parity-large)	25m 33s
test-linux-stable-int	20m 14s
test-linux-stable-runtime-benchmarks	26m 45s
test-linux-stable (1/3, parity-oldlinux)	24m 56s
test-linux-stable (2/3, parity-large)	21m 20s
test-linux-stable (2/3, parity-oldlinux)	20m 28s
test-linux-stable (3/3, parity-large)	20m 52s
test-linux-stable (3/3, parity-oldlinux)	19m 44s
All tests passed	1s
	3h 1m 35s

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