Update makefile with :soroban-dev -> :future (#551) #604

Job	Run time
amd64 / build-rs-stellar-xdr	2m 57s
amd64 / build-stellar-core	28s
amd64 / build-stellar-friendbot	49s
amd64 / build-stellar-horizon	2m 30s
amd64 / build-stellar-soroban-rpc	2m 20s
arm64 / build-rs-stellar-xdr	2m 5s
arm64 / build-stellar-core	22s
arm64 / build-stellar-friendbot	4m 45s
arm64 / build-stellar-horizon	8m 43s
arm64 / build-stellar-soroban-rpc	1m 54s
amd64 / build	5m 12s
amd64 / test (pubnet)	1m 28s
amd64 / test (local)	1m 45s
amd64 / test (local, --enable-soroban-rpc)	1m 54s
amd64 / push-pr	0s
arm64 / build	10m 48s
amd64 / push-release	55s
arm64 / test (pubnet)	1m 18s
arm64 / push-pr	0s
arm64 / test (local)	2m 47s
arm64 / test (local, --enable-soroban-rpc)	3m 9s
arm64 / push-release	43s
manifest / push	9s
complete	1s
	57m 2s

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