github: workflows: Use ubuntu 24.04 for testbench #20721

Job	Run time
LP64-WIP	3m 29s
manifest-check	54s
build-windows (ptl)	6m 36s
build-windows (imx8 imx8x imx8m imx8ulp)	9m 17s
build-windows (tgl tgl-h)	6m 58s
build-windows (-d, lnl)	7m 0s
build-windows (mtl lnl)	7m 4s
build-linux (mnfst, mtl lnl)	3m 8s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	3m 7s
build-linux (mnfst, ptl)	3m 8s
build-linux (mnfst, tgl tgl-h)	3m 15s
build-linux (zmain, mtl lnl)	3m 11s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	3m 21s
build-linux (zmain, ptl)	3m 7s
build-linux (zmain, tgl tgl-h)	3m 11s
build-linux (mnfst, --all)	3m 17s
build-linux (-d, mnfst, lnl)	3m 15s
compare-linux-win	1m 9s
	1h 14m 27s

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