Switch Test VHD to Ubuntu 24.04 #1812

Job	Run time
build openhcl [aarch64-linux]	5m 17s
build mdbook guide	2m 10s
build artifacts [x64-linux]	6m 4s
build openhcl [x64-linux]	7m 39s
build and check docs [x64-windows]	10m 16s
verify openhcl binary size [x64]	6m 25s
clippy [windows], unit tests [x64-windows]	12m 54s
clippy [linux, macos], unit tests [x64-linux]	7m 58s
clippy [linux-musl, misc nostd], unit tests [x64-linux-musl]	6m 58s
unit tests [aarch64-windows]	7m 13s
build and check docs [x64-linux]	2m 38s
test flowey local backend	3m 0s
xtask fmt (linux)	2m 22s
build artifacts (not for VMM tests) [aarch64-windows]	5m 47s
build artifacts (for VMM tests) [aarch64-windows]	9m 1s
build artifacts (not for VMM tests) [x64-windows]	6m 4s
build artifacts (for VMM tests) [x64-windows]	10m 48s
build artifacts [aarch64-linux]	5m 22s
xtask fmt (windows)	6m 50s
run vmm-tests [aarch64-windows]	5m 35s
run vmm-tests [x64-windows-intel]	10m 41s
run vmm-tests [x64-linux]	3m 42s
run vmm-tests [x64-windows-amd]	12m 47s
openvmm checkin gates	5s
	2h 37m 36s

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