ci: Properly install rocwmma for hip builds (#16305) #16

Job	Run time
macOS-arm64	2m 26s
macOS-x64	7m 0s
windows (vulkan, x64, -DGGML_VULKAN=ON, ggml-vulkan)	6m 41s
windows-cpu (x64)	3m 53s
ubuntu-22-vulkan	7m 35s
windows-hip (radeon, gfx1151;gfx1200;gfx1201;gfx1100;gfx1101;gfx1102;gfx1030;gfx1031;gfx1032)	44m 36s
windows-cpu (arm64)	3m 5s
windows-sycl	12m 5s
windows (opencl-adreno, arm64, -G "Ninja Multi-Config" -D CMAKE_TOOLCHAIN_FILE=cmake/arm64-window...	1m 32s
ios-xcode-build	13m 7s
windows-cuda (12.4)	49m 18s
ubuntu-22-cpu (x64, ubuntu-22.04)	3m 52s
release	1m 11s
	2h 36m 21s

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