ci: use capital letters for UNO during packaging #668

Job	Run time
Build and package cores	8m 35s
Split off zephyr_contrib	10s
Split off zephyr	11s
Split off zephyr_main	16s
Split off zephyr_unoq	6s
Test zephyr_main:giga	2m 37s
Test zephyr_main:nano33ble	1m 58s
Test zephyr_main:portentac33	2m 34s
Test zephyr_main:opta	2m 32s
Test zephyr_main:portentah7	2m 34s
Test zephyr:unoq	2m 27s
Test zephyr_contrib:frdm_rw612	2m 30s
Test zephyr_main:niclasense	2m 35s
Test zephyr_contrib:frdm_mcxn947	2m 26s
Test zephyr_contrib:ek_ra8d1	2m 20s
Publish core	20s
Publish jsons	15s
Collect logs	11s
verify-core	0s
cleanup-artifacts	4s
	34m 41s

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