west.yml: Update zephyr to hash 048c4f6 #19647

Job	Run time
LP64-WIP	3m 49s
build-windows (imx8 imx8x imx8m imx8ulp)	7m 12s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	5m 49s
build-windows (mtl)	5m 33s
build-linux (mnfst, mtl)	4m 25s
build-windows (tgl tgl-h)	6m 38s
manifest-check	53s
build-linux (mnfst, lnl)	4m 15s
build-windows (-d, mtl)	5m 55s
build-linux (mnfst, tgl tgl-h)	5m 15s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 13s
build-linux (zmain, mtl)	4m 38s
build-linux (zmain, lnl)	4m 30s
build-linux (zmain, tgl tgl-h)	5m 20s
build-linux (-d, mnfst, mtl)	4m 46s
build-linux (mnfst, --all)	7m 30s
compare-linux-win	27s
	1h 23m 8s

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