chain(penumbra): use gRPC for proof queries (#47) #108

Job	Run time
multi-chains-test (gaia13, gaiad, cosmos, osmosis, osmosisd, osmo)	1m 6s
multi-chains-test (gaia13, gaiad, cosmos, migaloo, migalood, migaloo)	1m 6s
multi-chains-test (gaia13, gaiad, cosmos, wasmd, wasmd, wasm)	1m 4s
multi-chains-test (gaia13, gaiad, cosmos, injective, injectived, inj)	1m 13s
multi-chains-test (gaia14, gaiad, cosmos, osmosis, osmosisd, osmo)	1m 12s
multi-chains-test (gaia14, gaiad, cosmos, migaloo, migalood, migaloo)	1m 5s
multi-chains-test (gaia14, gaiad, cosmos, wasmd, wasmd, wasm)	1m 1s
multi-chains-test (gaia14, gaiad, cosmos, injective, injectived, inj)	1m 9s
multi-chains-test (ibc-go-v7-simapp, simd, cosmos, osmosis, osmosisd, osmo)	1m 0s
multi-chains-test (ibc-go-v7-simapp, simd, cosmos, migaloo, migalood, migaloo)	1m 8s
multi-chains-test (ibc-go-v7-simapp, simd, cosmos, wasmd, wasmd, wasm)	1m 9s
multi-chains-test (ibc-go-v7-simapp, simd, cosmos, injective, injectived, inj)	1m 6s
multi-chains-test (ibc-go-v8-simapp, simd, cosmos, osmosis, osmosisd, osmo)	58s
multi-chains-test (ibc-go-v8-simapp, simd, cosmos, migaloo, migalood, migaloo)	1m 20s
multi-chains-test (ibc-go-v8-simapp, simd, cosmos, wasmd, wasmd, wasm)	1m 6s
multi-chains-test (ibc-go-v8-simapp, simd, cosmos, injective, injectived, inj)	59s
	17m 42s

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