Enable downstream CI builds #400

Job	Run time
rustfmt	13m 15s
build-wasm-images / build_and_push (examples/spin-rust-hello, images/spin)	1m 27s
build / build (ubuntu-latest, x86_64, slight, v1)	19m 26s
build-wasm-images / build_and_push (examples/spin-dotnet-hello, images/spin_dotnet)	50s
build / build (ubuntu-latest, x86_64, spin, v2)	23m 7s
build-wasm-images / build_and_push (examples/slight-rust-hello, images/slight)	4m 9s
build / build (ubuntu-latest, x86_64, wws, v1)	14m 45s
build-wasm-images / build_and_push (examples/wws-js-hello, images/wws)	10s
build / build (ubuntu-latest, x86_64, lunatic, v1)	12m 46s
build-wasm-images / build_and_push (examples/spin-inbound-redis, images/spin-inbound-redis)	1m 2s
build / build (ubuntu-latest, aarch64, slight, v1)	20m 9s
build-wasm-images / build_and_push (examples/spin-outbound-redis, images/spin-outbound-redis)	58s
build / build (ubuntu-latest, aarch64, spin, v2)	21m 59s
build-wasm-images / build_and_push (examples/lunatic-rust-hello, images/lunatic)	32s
build / build (ubuntu-latest, aarch64, wws, v1)	15m 23s
build-wasm-images / build_and_push (examples/lunatic-spawn, images/lunatic-spawn)	4m 12s
build / build (ubuntu-latest, aarch64, lunatic, v1)	13m 9s
build-wasm-images / build_and_push (examples/lunatic-submillisecond, images/lunatic-submillisecond)	4m 19s
test	13m 55s
	3h 5m 33s

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