node: Consolidate borsch library usage #3832

Job	Run time
build-docker	1m 59s
e2e-tests (ictest-validator-hotswap)	4m 50s
e2e-tests (ictest-cancel-upgrade)	4m 8s
e2e-tests (ictest-upgrade)	9m 49s
e2e-tests (ictest-slashing-params-update-vaa)	4m 8s
e2e-tests (ictest-wormchain)	7m 8s
e2e-tests (ictest-cw-wormhole)	8m 36s
e2e-tests (ictest-cw-shutdown-contracts)	7m 19s
	47m 57s

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