Bump timeout for building standalone echo client.

[bzbarsky-apple]

This job step keeps hitting its 5-minute timeout.

Problem

See above.

Change overview

Bump the timeout.

Testing

CI.

[github-actions]

PR #16770: Size comparison from abb6b55 to 5603540

Full report (18 builds for cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, telink)

platform	target	config	section	abb6b55	5603540	change	% change
cyw30739	light	cyw930739m2evb_01	(read/write)	605498	605498	0	0.0
			.app_xip_area	512428	512428	0	0.0
			.bss	75816	75816	0	0.0
			.data	604	604	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	lock	cyw930739m2evb_01	(read/write)	563286	563286	0	0.0
			.app_xip_area	471744	471744	0	0.0
			.bss	74320	74320	0	0.0
			.data	568	568	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	ota-requestor-no-progress-logging	cyw930739m2evb_01	(read/write)	575546	575546	0	0.0
			.app_xip_area	474356	474356	0	0.0
			.bss	83648	83648	0	0.0
			.data	508	508	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
efr32	lighting-app	BRD4161A	(read only)	926664	926664	0	0.0
			(read/write)	128952	128952	0	0.0
			.bss	126952	126952	0	0.0
			.data	1996	1996	0	0.0
			.text	926656	926656	0	0.0
		BRD4161A+rpc	(read only)	955688	955688	0	0.0
			(read/write)	144904	144904	0	0.0
			.bss	142728	142728	0	0.0
			.data	2176	2176	0	0.0
			.text	955680	955680	0	0.0
	window-app	BRD4161A	(read only)	856052	856052	0	0.0
			(read/write)	126912	126912	0	0.0
			.bss	125040	125040	0	0.0
			.data	1872	1872	0	0.0
			.text	856044	856044	0	0.0
esp32	all-clusters-app	c3devkit	(read only)	966788	966788	0	0.0
			(read/write)	1394810	1394810	0	0.0
			.dram0.bss	62240	62240	0	0.0
			.dram0.data	14204	14204	0	0.0
			.flash.rodata	199456	199456	0	0.0
			.flash.text	966788	966788	0	0.0
			.iram0.text	62016	62016	0	0.0
		m5stack	(read only)	1023211	1023211	0	0.0
			(read/write)	462572	462572	0	0.0
			.dram0.bss	67768	67768	0	0.0
			.dram0.data	34024	34024	0	0.0
			.flash.rodata	228944	228944	0	0.0
			.flash.text	1017827	1017827	0	0.0
			.iram0.text	123107	123107	0	0.0
k32w	light	k32w061+release	(read/write)	704320	704320	0	0.0
			.bss	77808	77808	0	0.0
			.data	1876	1876	0	0.0
			.text	618836	618836	0	0.0
	lock	k32w061+release	(read/write)	703428	703428	0	0.0
			.bss	77784	77784	0	0.0
			.data	1916	1916	0	0.0
			.text	617928	617928	0	0.0
linux	chip-tool-ipv6only	arm64	(read only)	9849660	9849660	0	0.0
			(read/write)	473713	473713	0	0.0
			.bss	40737	40737	0	0.0
			.data	1144	1144	0	0.0
			.data.rel.ro	372656	372656	0	0.0
			.dynamic	560	560	0	0.0
			.got	55368	55368	0	0.0
			.init	24	24	0	0.0
			.init_array	192	192	0	0.0
			.rodata	494468	494468	0	0.0
			.text	8301972	8301972	0	0.0
	thermostat-no-ble	arm64	(read only)	2275348	2275348	0	0.0
			(read/write)	148369	148369	0	0.0
			.bss	62817	62817	0	0.0
			.data	1040	1040	0	0.0
			.data.rel.ro	77000	77000	0	0.0
			.dynamic	560	560	0	0.0
			.got	4504	4504	0	0.0
			.init	24	24	0	0.0
			.init_array	360	360	0	0.0
			.rodata	140036	140036	0	0.0
			.text	1911952	1911952	0	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2355916	2355916	0	0.0
			.bss	184860	184860	0	0.0
			.data	5760	5760	0	0.0
			.text	1318516	1318516	0	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1143867	1143867	0	0.0
			bss	142892	142892	0	0.0
			rodata	142644	142644	0	0.0
			text	783452	783452	0	0.0
p6	all-clusters-app	default	(read/write)	2498448	2498448	0	0.0
			.bss	118280	118280	0	0.0
			.data	2640	2640	0	0.0
			.text	1456712	1456712	0	0.0
	light-app	default	(read/write)	2400896	2400896	0	0.0
			.bss	111752	111752	0	0.0
			.data	2496	2496	0	0.0
			.text	1359160	1359160	0	0.0
	lock-app	default	(read/write)	2364400	2364400	0	0.0
			.bss	111496	111496	0	0.0
			.data	2456	2456	0	0.0
			.text	1322664	1322664	0	0.0
telink	lighting-app	tlsr9518adk80d	(read/write)	787768	787768	0	0.0
			bss	70092	70092	0	0.0
			noinit	40416	40416	0	0.0
			text	558074	558074	0	0.0