Use stellar-core upgrade config set command #514

Job	Run time
amd64 / build-stellar-horizon	2m 42s
amd64 / build-stellar-core	33s
amd64 / build-stellar-friendbot	49s
amd64 / build-stellar-soroban-rpc	1m 13s
arm64 / build-stellar-horizon	10m 7s
arm64 / build-stellar-core	20s
arm64 / build-stellar-friendbot	3m 27s
arm64 / build-stellar-soroban-rpc	46s
amd64 / build	3m 44s
amd64 / test (pubnet)	1m 58s
amd64 / test (local)	1m 53s
amd64 / push-pr	1m 0s
amd64 / push-release	0s
arm64 / build	9m 0s
arm64 / test (pubnet)	1m 36s
arm64 / test (local)	2m 32s
arm64 / push-pr	48s
arm64 / push-release	0s
manifest / push	9s
complete	1s
	42m 38s

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