west.yml: update zephyr to 0837ad5be84 #20162

Job	Run time
LP64-WIP	3m 56s
manifest-check	50s
build-windows (ptl)	5m 48s
build-windows (-d, lnl)	5m 52s
build-windows (tgl tgl-h)	6m 49s
build-windows (mtl lnl)	6m 57s
build-linux (mnfst, tgl tgl-h)	5m 31s
build-linux (mnfst, mtl lnl)	5m 44s
build-windows (imx8 imx8x imx8m imx8ulp)	9m 1s
build-linux (mnfst, ptl)	5m 15s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 19s
build-linux (zmain, mtl lnl)	6m 5s
build-linux (zmain, tgl tgl-h)	5m 26s
build-linux (zmain, ptl)	5m 12s
build-linux (mnfst, --all)	13m 45s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 20s
build-linux (-d, mnfst, lnl)	4m 34s
compare-linux-win	38s
	1h 44m 2s

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