libraries/SocketWrapper: Support loading CA certs from the file system. #718

Job	Run time
Build and package cores	10m 54s
Split off zephyr_contrib	9s
Split off zephyr	11s
Split off zephyr_main	16s
Split off zephyr_unoq	7s
Test zephyr_main:giga	2m 29s
Test zephyr_main:portentah7	2m 33s
Test zephyr_main:opta	2m 32s
Test zephyr_main:niclasense	2m 40s
Test zephyr_main:nano33ble	2m 35s
Test zephyr_contrib:ek_ra8d1	2m 29s
Test zephyr_main:portentac33	2m 25s
Test zephyr_contrib:frdm_mcxn947	2m 29s
Test zephyr:unoq	1m 43s
Test zephyr_contrib:frdm_rw612	2m 24s
Collect logs	9s
Publish jsons	20s
verify-core	0s
Publish core	0s
cleanup-artifacts	6s
	36m 31s

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