Add Gaia v20.0.0 to chains running tests in CI #6950

Job	Run time
interchain-security-ica (.#gaia20 .#stride, gaiad,strided, cosmos,stride)	7m 25s
integration-test (gaia18, gaiad, cosmos, stake, forward-packet,clean-workers,ica,ics29-fee)	1h 14m 27s
interchain-security-ica (.#gaia18 .#neutron, gaiad,neutrond, cosmos,neutron)	2m 30s
integration-test (gaia20, gaiad, cosmos, stake, forward-packet,clean-workers,ica,ics29-fee)	1h 21m 54s
integration-test (ibc-go-v6-simapp, simd, cosmos, stake, ica,ics29-fee,authz)	1h 4m 0s
interchain-security-icq (.#gaia20 .#stride-no-admin, gaiad,strided, cosmos,stride)	8m 45s
integration-test (ibc-go-v7-simapp, simd, cosmos, stake, ica,ics29-fee,authz)	1h 2m 22s
integration-test (ibc-go-v8-simapp, simd, cosmos, stake, ica,ics29-fee,new-register-interchain-ac...	1h 25m 55s
ordered-channel-test	8m 58s
integration-test (ibc-go-v9-simapp, simd, cosmos, stake, ica,ics29-fee,new-register-interchain-ac...	1h 25m 21s
integration-test (wasmd, wasmd, wasm, stake)	51m 49s
celestia-to-gaia (.#celestia .#gaia20, celestia-appd,gaiad, celestia,cosmos, utia,stake)	39m 18s
integration-test (osmosis, osmosisd, osmo, stake, dynamic-gas-fee,forward-packet,ica)	1h 5m 39s
integration-test (juno, junod, juno, stake, juno,forward-packet,ica,ics29-fee)	1h 20m 57s
integration-test (provenance, provenanced, pb, nhash, fee-grant,authz,async-icq)	56m 18s
integration-test (migaloo, migalood, migaloo, stake, ics29-fee,ica,forward-packet)	1h 9m 40s
	14h 5m 18s

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