Use a git sha for revision #1937

Job	Run time
scheduler	48s
mpy-cross / build (static-raspbian)	46s
tests / run (mpy)	43s
tests / run (all)	1m 11s
mpy-cross-mac	40s
mpy-cross / build (static)	27s
tests / run (native)	50s
mpy-cross / build (static-aarch64)	44s
tests / zephyr	11m 35s
mpy-cross / build (static-mingw)	55s
tests / run (native_mpy)	41s
docs	-1s
windows	0s
windows-zephyr	0s
ports (zephyr-cp) / board (nordic_nrf7002dk)	33m 10s
ports (zephyr-cp) / board (native_nrf5340bsim)	28m 2s
ports (zephyr-cp) / board (native_native_sim)	21m 58s
ports (zephyr-cp) / board (nordic_nrf54l15dk)	24m 46s
ports (zephyr-cp) / board (st_stm32h7b3i_dk)	25m 54s
ports (zephyr-cp) / board (nxp_frdm_mcxn947)	26m 11s
ports (zephyr-cp) / board (renesas_ek_ra6m5)	27m 41s
ports (zephyr-cp) / board (nxp_frdm_rw612)	34m 51s
ports (zephyr-cp) / board (renesas_ek_ra8d1)	28m 48s
ports (zephyr-cp) / board (st_nucleo_n657x0_q)	26m 49s
ports (zephyr-cp) / board (nordic_nrf54h20dk)	28m 0s
ports (zephyr-cp) / board (nxp_mimxrt1170_evk)	33m 59s
ports (zephyr-cp) / board (st_stm32wba65i_dk1)	24m 20s
ports (zephyr-cp) / board (renesas_da14695_dk_usb)	23m 32s
ports (zephyr-cp) / board (st_nucleo_u575zi_q)	25m 42s
ports (zephyr-cp) / board (nordic_nrf5340dk)	30m 49s
	7h 43m 51s

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