Update makefile with :soroban-dev -> :future #601

Job	Run time
amd64 / build-rs-stellar-xdr	1m 40s
amd64 / build-stellar-core	23s
amd64 / build-stellar-friendbot	1m 0s
amd64 / build-stellar-horizon	2m 33s
amd64 / build-stellar-soroban-rpc	2m 8s
arm64 / build-stellar-core	20s
arm64 / build-stellar-friendbot	4m 38s
arm64 / build-stellar-horizon	8m 37s
arm64 / build-rs-stellar-xdr	3m 19s
arm64 / build-stellar-soroban-rpc	1m 56s
amd64 / build	5m 26s
amd64 / test (pubnet)	1m 30s
amd64 / test (local)	1m 43s
amd64 / test (local, --enable-soroban-rpc)	1m 58s
amd64 / push-pr	44s
arm64 / build	8m 29s
amd64 / push-release	0s
arm64 / test (pubnet)	1m 13s
arm64 / push-pr	48s
arm64 / test (local)	2m 39s
arm64 / test (local, --enable-soroban-rpc)	3m 1s
arm64 / push-release	0s
manifest / push	9s
complete	1s
	54m 15s

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