Update cloudbuild from 33 to 40 docker image, otherwise after #13031 …

[andy31415]

…it cannot build NRF

Problem

Build error as it requires a new SDK:

2021-12-15 22:57:42 INFO    Checking current nRF Connect SDK revision...
2021-12-15 22:57:42 INFO    ################################################################################
2021-12-15 22:57:42 INFO    # WARNING: Your current NCS revision (ffcf07fe4586634a6793a48e5444a7196e7ebac6)#
2021-12-15 22:57:42 INFO    # differs from the recommended (cfedfdfa08567b2252b511a4d1db15fbeba8152d).     #
2021-12-15 22:57:42 INFO    #                                                                              #
2021-12-15 22:57:42 INFO    # Please be aware that it may lead to encountering unexpected problems.        #
2021-12-15 22:57:42 INFO    # Consider updating NCS to the recommended revision, by calling:               #
2021-12-15 22:57:42 INFO    # /workspace/scripts/setup/nrfconnect/update_ncs.py --update                   #
2021-12-15 22:57:42 INFO    ################################################################################

[github-actions]

PR #13078: Size comparison from 41700bd to 69ab697

Full report (20 builds for efr32, k32w, linux, mbed, p6, qpg, telink)

platform	target	config	section	41700bd	69ab697	change	% change
efr32	lighting-app	BRD4161A	(read only)	829740	829740	0	0.0
			(read/write)	127356	127356	0	0.0
			.bss	125480	125480	0	0.0
			.data	1876	1876	0	0.0
			.text	829732	829732	0	0.0
		BRD4161A+rpc	(read only)	817360	817360	0	0.0
			(read/write)	144024	144024	0	0.0
			.bss	142048	142048	0	0.0
			.data	1976	1976	0	0.0
			.text	817352	817352	0	0.0
	window-app	BRD4161A	(read only)	803116	803116	0	0.0
			(read/write)	126296	126296	0	0.0
			.bss	124464	124464	0	0.0
			.data	1832	1832	0	0.0
			.text	803108	803108	0	0.0
k32w	lighting-app	k32w061+se05x+release	(read/write)	685556	685556	0	0.0
			.bss	78056	78056	0	0.0
			.data	1908	1908	0	0.0
			.text	599792	599792	0	0.0
	lock-app	k32w061+debug	(read/write)	633120	633120	0	0.0
			.bss	76208	76208	0	0.0
			.data	1860	1860	0	0.0
			.text	549252	549252	0	0.0
	shell	k32w061+debug	(read/write)	638704	638704	0	0.0
			.bss	78716	78716	0	0.0
			.data	1840	1840	0	0.0
			.text	552348	552348	0	0.0
linux	chip-tool-ipv6only	arm64	(read only)	6917764	6917764	0	0.0
			(read/write)	323377	323377	0	0.0
			.bss	54577	54577	0	0.0
			.data	1096	1096	0	0.0
			.data.rel.ro	208016	208016	0	0.0
			.dynamic	560	560	0	0.0
			.got	55992	55992	0	0.0
			.init	24	24	0	0.0
			.init_array	168	168	0	0.0
			.rodata	378324	378324	0	0.0
			.text	5852564	5852564	0	0.0
	thermostat-no-ble	arm64	(read only)	1993508	1993508	0	0.0
			(read/write)	143937	143937	0	0.0
			.bss	64321	64321	0	0.0
			.data	880	880	0	0.0
			.data.rel.ro	72000	72000	0	0.0
			.dynamic	560	560	0	0.0
			.got	3840	3840	0	0.0
			.init	24	24	0	0.0
			.init_array	288	288	0	0.0
			.rodata	128004	128004	0	0.0
			.text	1654032	1654032	0	0.0
mbed	all-clusters-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2333912	2333912	0	0.0
			.bss	189076	189076	0	0.0
			.data	5264	5264	0	0.0
			.text	1296488	1296488	0	0.0
	lighting-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2328488	2328488	0	0.0
			.bss	180904	180904	0	0.0
			.data	5544	5544	0	0.0
			.text	1291088	1291088	0	0.0
	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2301584	2301584	0	0.0
			.bss	179952	179952	0	0.0
			.data	5536	5536	0	0.0
			.text	1264184	1264184	0	0.0
	pigweed-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	1140008	1140008	0	0.0
			.bss	11756	11756	0	0.0
			.data	4368	4368	0	0.0
			.text	103392	103392	0	0.0
	shell	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2053688	2053688	0	0.0
			.bss	156980	156980	0	0.0
			.data	4864	4864	0	0.0
			.text	1016288	1016288	0	0.0
p6	all-clusters-app	default	(read/write)	2384656	2384656	0	0.0
			.bss	117268	117268	0	0.0
			.data	2544	2544	0	0.0
			.text	1342920	1342920	0	0.0
	light-app	default	(read/write)	2324024	2324024	0	0.0
			.bss	106160	106160	0	0.0
			.data	2384	2384	0	0.0
			.text	1282288	1282288	0	0.0
	lock-app	default	(read/write)	2296232	2296232	0	0.0
			.bss	105040	105040	0	0.0
			.data	2336	2336	0	0.0
			.text	1254496	1254496	0	0.0
qpg	lighting-app	qpg6105+debug	(read only)	531960	531960	0	0.0
			(read/write)	146936	146936	0	0.0
			.bss	86824	86824	0	0.0
			.data	1004	1004	0	0.0
			.text	526640	526640	0	0.0
	lock-app	qpg6105+debug	(read only)	503656	503656	0	0.0
			(read/write)	146940	146940	0	0.0
			.bss	85960	85960	0	0.0
			.data	952	952	0	0.0
			.text	498336	498336	0	0.0
	persistent-storage-app	qpg6105+debug	(read only)	106448	106448	0	0.0
			(read/write)	146938	146938	0	0.0
			.bss	36146	36146	0	0.0
			.data	288	288	0	0.0
			.text	101128	101128	0	0.0
telink	lighting-app	tlsr9518adk80d	(read/write)	830342	830342	0	0.0
			bss	87048	87048	0	0.0
			noinit	37160	37160	0	0.0
			text	578516	578516	0	0.0