chore(deps): bump h2 from 0.3.16 to 0.3.21 #537

Job	Run time
ordered-channel-test	26m 39s
integration-test (gaia8, gaiad, cosmos)	37m 35s
integration-test (gaia9, gaiad, cosmos)	38m 4s
integration-test (ibc-go-v4-simapp, simd, cosmos)	1h 2m 35s
integration-test (ibc-go-v5-simapp, simd, cosmos)	58m 31s
integration-test (ibc-go-v6-simapp, simd, cosmos)	44m 17s
integration-test (ibc-go-v7-simapp, simd, cosmos)	37m 54s
integration-test (wasmd, wasmd, wasm)	1h 2m 4s
integration-test (evmos, evmosd, evmos)	43m 28s
integration-test (osmosis, osmosisd, osmo)	37m 14s
integration-test (stride, strided, stride)	40m 13s
forward-packet (gaia8, gaiad, cosmos)	53m 44s
forward-packet (gaia9, gaiad, cosmos)	53m 1s
ica-filter-test	21m 38s
ics31 (.#gaia8 .#stride-no-admin, gaiad,strided, cosmos,stride)	26m 40s
ics29-fee-test (ibc-go-v5-simapp, simd, cosmos)	27m 6s
ics29-fee-test (ibc-go-v6-simapp, simd, cosmos)	28m 42s
ics29-fee-test (ibc-go-v7-simapp, simd, cosmos)	30m 40s
model-based-test (gaia6)	17m 37s
multi-chains-test	0s
	12h 27m 42s

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