Fix tests in keplr and utils using fixture files instead of exported assets and ibcs

[Zetazzz]

Fixed https://github.com/cosmology-tech/projects-issues/issues/722

[pyramation]

this changed? that's likely not something we want, let's double check this one — this is actually the original reason for the special assets test

[pyramation]

perhaps because the the addition of new traces — let's see what the. previous values for traces were, and see if that fixes the value, so we can ensure the calculations are done right

        "traces": [
          {
            "type": "liquid-stake",
            "counterparty": {
              "chain_name": "persistence",
              "base_denom": "uxprt"
            },
            "provider": "Persistence"
          },
          {
            "type": "bridge",
            "counterparty": {
              "chain_name": "ethereum",
              "base_denom": "0xfB5c6815cA3AC72Ce9F5006869AE67f18bF77006"
            },
            "provider": "Gravity Bridge"
          },
          {
            "type": "ibc",
            "counterparty": {
              "chain_name": "gravitybridge",
              "base_denom": "gravity0xfB5c6815cA3AC72Ce9F5006869AE67f18bF77006",
              "channel_id": "channel-24"
            },
            "chain": {
              "channel_id": "channel-38",
              "path": "transfer/channel-38/gravity0xfB5c6815cA3AC72Ce9F5006869AE67f18bF77006"
            }
          }
        ],